Home / 21,585.90-29,787.98-12,154.26

Finding the Fourth Proportional to 21,585.90, 29,787.98 and 12,154.26

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Solution

The fourth proportional to 21,585.90, 29,787.98 and 12,154.26 is: 16,772.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,585.90 : 29,787.98 = 12,154.26 : x
  2. Step 2: Convert to fraction form
    21,585.90/29,787.98 = 12,154.26/x
  3. Step 3: Cross multiply
    21,585.90x = 29,787.98 × 12,154.26
  4. Step 4: Simplify right side
    21,585.90x = 362,050,793.02
  5. Step 5: Solve for x
    x = 362,050,793.02/21,585.90
  6. Step 6: Final answer
    x = 16,772.56

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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.