Home / 21,870.57-32,787.17-10,020.38

Finding the Fourth Proportional to 21,870.57, 32,787.17 and 10,020.38

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Solution

The fourth proportional to 21,870.57, 32,787.17 and 10,020.38 is: 15,022.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,870.57 : 32,787.17 = 10,020.38 : x
  2. Step 2: Convert to fraction form
    21,870.57/32,787.17 = 10,020.38/x
  3. Step 3: Cross multiply
    21,870.57x = 32,787.17 × 10,020.38
  4. Step 4: Simplify right side
    21,870.57x = 328,539,688.49
  5. Step 5: Solve for x
    x = 328,539,688.49/21,870.57
  6. Step 6: Final answer
    x = 15,022.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.