Home / 15,517.79-21,389.65-10,480.40

Finding the Fourth Proportional to 15,517.79, 21,389.65 and 10,480.40

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Solution

The fourth proportional to 15,517.79, 21,389.65 and 10,480.40 is: 14,446.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,517.79 : 21,389.65 = 10,480.40 : x
  2. Step 2: Convert to fraction form
    15,517.79/21,389.65 = 10,480.40/x
  3. Step 3: Cross multiply
    15,517.79x = 21,389.65 × 10,480.40
  4. Step 4: Simplify right side
    15,517.79x = 224,172,034.92
  5. Step 5: Solve for x
    x = 224,172,034.92/15,517.79
  6. Step 6: Final answer
    x = 14,446.13

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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.