Home / 21,787.31-30,036.08-14,604.71

Finding the Fourth Proportional to 21,787.31, 30,036.08 and 14,604.71

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Solution

The fourth proportional to 21,787.31, 30,036.08 and 14,604.71 is: 20,134.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,787.31 : 30,036.08 = 14,604.71 : x
  2. Step 2: Convert to fraction form
    21,787.31/30,036.08 = 14,604.71/x
  3. Step 3: Cross multiply
    21,787.31x = 30,036.08 × 14,604.71
  4. Step 4: Simplify right side
    21,787.31x = 438,668,124.27
  5. Step 5: Solve for x
    x = 438,668,124.27/21,787.31
  6. Step 6: Final answer
    x = 20,134.11

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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.