Home / 25,105.56-34,631.28-15,657.72

Finding the Fourth Proportional to 25,105.56, 34,631.28 and 15,657.72

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Solution

The fourth proportional to 25,105.56, 34,631.28 and 15,657.72 is: 21,598.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,105.56 : 34,631.28 = 15,657.72 : x
  2. Step 2: Convert to fraction form
    25,105.56/34,631.28 = 15,657.72/x
  3. Step 3: Cross multiply
    25,105.56x = 34,631.28 × 15,657.72
  4. Step 4: Simplify right side
    25,105.56x = 542,246,885.48
  5. Step 5: Solve for x
    x = 542,246,885.48/25,105.56
  6. Step 6: Final answer
    x = 21,598.68

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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.