Home / 25,631.20-38,468.40-11,612.80

Finding the Fourth Proportional to 25,631.20, 38,468.40 and 11,612.80

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Solution

The fourth proportional to 25,631.20, 38,468.40 and 11,612.80 is: 17,428.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,631.20 : 38,468.40 = 11,612.80 : x
  2. Step 2: Convert to fraction form
    25,631.20/38,468.40 = 11,612.80/x
  3. Step 3: Cross multiply
    25,631.20x = 38,468.40 × 11,612.80
  4. Step 4: Simplify right side
    25,631.20x = 446,725,835.52
  5. Step 5: Solve for x
    x = 446,725,835.52/25,631.20
  6. Step 6: Final answer
    x = 17,428.99

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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.