Home / 15,140.99-20,892.33-8,426.70

Finding the Fourth Proportional to 15,140.99, 20,892.33 and 8,426.70

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Solution

The fourth proportional to 15,140.99, 20,892.33 and 8,426.70 is: 11,627.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,140.99 : 20,892.33 = 8,426.70 : x
  2. Step 2: Convert to fraction form
    15,140.99/20,892.33 = 8,426.70/x
  3. Step 3: Cross multiply
    15,140.99x = 20,892.33 × 8,426.70
  4. Step 4: Simplify right side
    15,140.99x = 176,053,397.21
  5. Step 5: Solve for x
    x = 176,053,397.21/15,140.99
  6. Step 6: Final answer
    x = 11,627.60

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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.