Home / 15,411.24-21,272.76-11,869.92

Finding the Fourth Proportional to 15,411.24, 21,272.76 and 11,869.92

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Solution

The fourth proportional to 15,411.24, 21,272.76 and 11,869.92 is: 16,384.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,411.24 : 21,272.76 = 11,869.92 : x
  2. Step 2: Convert to fraction form
    15,411.24/21,272.76 = 11,869.92/x
  3. Step 3: Cross multiply
    15,411.24x = 21,272.76 × 11,869.92
  4. Step 4: Simplify right side
    15,411.24x = 252,505,959.38
  5. Step 5: Solve for x
    x = 252,505,959.38/15,411.24
  6. Step 6: Final answer
    x = 16,384.53

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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.