Home / 21,585.53-29,787.98-12,154.11

Finding the Fourth Proportional to 21,585.53, 29,787.98 and 12,154.11

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Solution

The fourth proportional to 21,585.53, 29,787.98 and 12,154.11 is: 16,772.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,585.53 : 29,787.98 = 12,154.11 : x
  2. Step 2: Convert to fraction form
    21,585.53/29,787.98 = 12,154.11/x
  3. Step 3: Cross multiply
    21,585.53x = 29,787.98 × 12,154.11
  4. Step 4: Simplify right side
    21,585.53x = 362,046,324.83
  5. Step 5: Solve for x
    x = 362,046,324.83/21,585.53
  6. Step 6: Final answer
    x = 16,772.64

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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.