Home / 21,451.73-29,585.84-15,099.35

Finding the Fourth Proportional to 21,451.73, 29,585.84 and 15,099.35

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Solution

The fourth proportional to 21,451.73, 29,585.84 and 15,099.35 is: 20,824.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,451.73 : 29,585.84 = 15,099.35 : x
  2. Step 2: Convert to fraction form
    21,451.73/29,585.84 = 15,099.35/x
  3. Step 3: Cross multiply
    21,451.73x = 29,585.84 × 15,099.35
  4. Step 4: Simplify right side
    21,451.73x = 446,726,989.42
  5. Step 5: Solve for x
    x = 446,726,989.42/21,451.73
  6. Step 6: Final answer
    x = 20,824.75

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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.