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Finding the Fourth Proportional to 12,637.71, 18,941.19 and 8,941.01

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Solution

The fourth proportional to 12,637.71, 18,941.19 and 8,941.01 is: 13,400.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,637.71 : 18,941.19 = 8,941.01 : x
  2. Step 2: Convert to fraction form
    12,637.71/18,941.19 = 8,941.01/x
  3. Step 3: Cross multiply
    12,637.71x = 18,941.19 × 8,941.01
  4. Step 4: Simplify right side
    12,637.71x = 169,353,291.26
  5. Step 5: Solve for x
    x = 169,353,291.26/12,637.71
  6. Step 6: Final answer
    x = 13,400.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.