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Finding the Fourth Proportional to 13,226.76, 18,252.92 and 7,637.76

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Solution

The fourth proportional to 13,226.76, 18,252.92 and 7,637.76 is: 10,540.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,226.76 : 18,252.92 = 7,637.76 : x
  2. Step 2: Convert to fraction form
    13,226.76/18,252.92 = 7,637.76/x
  3. Step 3: Cross multiply
    13,226.76x = 18,252.92 × 7,637.76
  4. Step 4: Simplify right side
    13,226.76x = 139,411,422.26
  5. Step 5: Solve for x
    x = 139,411,422.26/13,226.76
  6. Step 6: Final answer
    x = 10,540.10

Related Problems

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Half scale
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Double scale
Find fourth proportional to 13,227.76, 18,254.30 and 7,638.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.