Home / 13,637.19-18,820.74-8,335.55

Finding the Fourth Proportional to 13,637.19, 18,820.74 and 8,335.55

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Solution

The fourth proportional to 13,637.19, 18,820.74 and 8,335.55 is: 11,503.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,637.19 : 18,820.74 = 8,335.55 : x
  2. Step 2: Convert to fraction form
    13,637.19/18,820.74 = 8,335.55/x
  3. Step 3: Cross multiply
    13,637.19x = 18,820.74 × 8,335.55
  4. Step 4: Simplify right side
    13,637.19x = 156,881,125.20
  5. Step 5: Solve for x
    x = 156,881,125.20/13,637.19
  6. Step 6: Final answer
    x = 11,503.92

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Half scale
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Double scale
Find fourth proportional to 13,638.19, 18,822.12 and 8,336.55
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.