Home / 21,549.38-29,737.85-12,117.96

Finding the Fourth Proportional to 21,549.38, 29,737.85 and 12,117.96

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Solution

The fourth proportional to 21,549.38, 29,737.85 and 12,117.96 is: 16,722.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,549.38 : 29,737.85 = 12,117.96 : x
  2. Step 2: Convert to fraction form
    21,549.38/29,737.85 = 12,117.96/x
  3. Step 3: Cross multiply
    21,549.38x = 29,737.85 × 12,117.96
  4. Step 4: Simplify right side
    21,549.38x = 360,362,016.20
  5. Step 5: Solve for x
    x = 360,362,016.20/21,549.38
  6. Step 6: Final answer
    x = 16,722.62

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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.