Home / 25,623.10-38,434.65-20,439.10

Finding the Fourth Proportional to 25,623.10, 38,434.65 and 20,439.10

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Solution

The fourth proportional to 25,623.10, 38,434.65 and 20,439.10 is: 30,658.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,623.10 : 38,434.65 = 20,439.10 : x
  2. Step 2: Convert to fraction form
    25,623.10/38,434.65 = 20,439.10/x
  3. Step 3: Cross multiply
    25,623.10x = 38,434.65 × 20,439.10
  4. Step 4: Simplify right side
    25,623.10x = 785,569,654.82
  5. Step 5: Solve for x
    x = 785,569,654.82/25,623.10
  6. Step 6: Final answer
    x = 30,658.65

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Similar ratio
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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.