Home / 15,815.52-21,834.27-10,787.13

Finding the Fourth Proportional to 15,815.52, 21,834.27 and 10,787.13

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Solution

The fourth proportional to 15,815.52, 21,834.27 and 10,787.13 is: 14,892.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.52 : 21,834.27 = 10,787.13 : x
  2. Step 2: Convert to fraction form
    15,815.52/21,834.27 = 10,787.13/x
  3. Step 3: Cross multiply
    15,815.52x = 21,834.27 × 10,787.13
  4. Step 4: Simplify right side
    15,815.52x = 235,529,108.95
  5. Step 5: Solve for x
    x = 235,529,108.95/15,815.52
  6. Step 6: Final answer
    x = 14,892.28

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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.