Home / 25,439.30-35,123.28-15,893.72

Finding the Fourth Proportional to 25,439.30, 35,123.28 and 15,893.72

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Solution

The fourth proportional to 25,439.30, 35,123.28 and 15,893.72 is: 21,943.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,439.30 : 35,123.28 = 15,893.72 : x
  2. Step 2: Convert to fraction form
    25,439.30/35,123.28 = 15,893.72/x
  3. Step 3: Cross multiply
    25,439.30x = 35,123.28 × 15,893.72
  4. Step 4: Simplify right side
    25,439.30x = 558,239,577.80
  5. Step 5: Solve for x
    x = 558,239,577.80/25,439.30
  6. Step 6: Final answer
    x = 21,943.98

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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.