Home / 15,140.68-20,893.86-8,426.11

Finding the Fourth Proportional to 15,140.68, 20,893.86 and 8,426.11

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Solution

The fourth proportional to 15,140.68, 20,893.86 and 8,426.11 is: 11,627.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,140.68 : 20,893.86 = 8,426.11 : x
  2. Step 2: Convert to fraction form
    15,140.68/20,893.86 = 8,426.11/x
  3. Step 3: Cross multiply
    15,140.68x = 20,893.86 × 8,426.11
  4. Step 4: Simplify right side
    15,140.68x = 176,053,962.68
  5. Step 5: Solve for x
    x = 176,053,962.68/15,140.68
  6. Step 6: Final answer
    x = 11,627.88

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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.