Home / 25,687.20-38,534.40-12,528.84

Finding the Fourth Proportional to 25,687.20, 38,534.40 and 12,528.84

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Solution

The fourth proportional to 25,687.20, 38,534.40 and 12,528.84 is: 18,795.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,687.20 : 38,534.40 = 12,528.84 : x
  2. Step 2: Convert to fraction form
    25,687.20/38,534.40 = 12,528.84/x
  3. Step 3: Cross multiply
    25,687.20x = 38,534.40 × 12,528.84
  4. Step 4: Simplify right side
    25,687.20x = 482,791,332.10
  5. Step 5: Solve for x
    x = 482,791,332.10/25,687.20
  6. Step 6: Final answer
    x = 18,795.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.