Home / 27,902.18-38,472.50-20,816.30

Finding the Fourth Proportional to 27,902.18, 38,472.50 and 20,816.30

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Solution

The fourth proportional to 27,902.18, 38,472.50 and 20,816.30 is: 28,702.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,902.18 : 38,472.50 = 20,816.30 : x
  2. Step 2: Convert to fraction form
    27,902.18/38,472.50 = 20,816.30/x
  3. Step 3: Cross multiply
    27,902.18x = 38,472.50 × 20,816.30
  4. Step 4: Simplify right side
    27,902.18x = 800,855,101.75
  5. Step 5: Solve for x
    x = 800,855,101.75/27,902.18
  6. Step 6: Final answer
    x = 28,702.24

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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.