Home / 15,793.40-21,787.89-10,687.09

Finding the Fourth Proportional to 15,793.40, 21,787.89 and 10,687.09

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Solution

The fourth proportional to 15,793.40, 21,787.89 and 10,687.09 is: 14,743.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,793.40 : 21,787.89 = 10,687.09 : x
  2. Step 2: Convert to fraction form
    15,793.40/21,787.89 = 10,687.09/x
  3. Step 3: Cross multiply
    15,793.40x = 21,787.89 × 10,687.09
  4. Step 4: Simplify right side
    15,793.40x = 232,849,177.82
  5. Step 5: Solve for x
    x = 232,849,177.82/15,793.40
  6. Step 6: Final answer
    x = 14,743.45

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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.