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Finding the Fourth Proportional to 35,513.28, 53,269.92 and 12,139.92

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Solution

The fourth proportional to 35,513.28, 53,269.92 and 12,139.92 is: 18,209.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,513.28 : 53,269.92 = 12,139.92 : x
  2. Step 2: Convert to fraction form
    35,513.28/53,269.92 = 12,139.92/x
  3. Step 3: Cross multiply
    35,513.28x = 53,269.92 × 12,139.92
  4. Step 4: Simplify right side
    35,513.28x = 646,692,567.21
  5. Step 5: Solve for x
    x = 646,692,567.21/35,513.28
  6. Step 6: Final answer
    x = 18,209.88

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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.