Home / 21,565.02-29,753.74-12,948.96

Finding the Fourth Proportional to 21,565.02, 29,753.74 and 12,948.96

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Solution

The fourth proportional to 21,565.02, 29,753.74 and 12,948.96 is: 17,865.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,565.02 : 29,753.74 = 12,948.96 : x
  2. Step 2: Convert to fraction form
    21,565.02/29,753.74 = 12,948.96/x
  3. Step 3: Cross multiply
    21,565.02x = 29,753.74 × 12,948.96
  4. Step 4: Simplify right side
    21,565.02x = 385,279,989.11
  5. Step 5: Solve for x
    x = 385,279,989.11/21,565.02
  6. Step 6: Final answer
    x = 17,865.97

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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.