Home / 28,000.30-38,626.78-17,920.66

Finding the Fourth Proportional to 28,000.30, 38,626.78 and 17,920.66

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Solution

The fourth proportional to 28,000.30, 38,626.78 and 17,920.66 is: 24,721.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,000.30 : 38,626.78 = 17,920.66 : x
  2. Step 2: Convert to fraction form
    28,000.30/38,626.78 = 17,920.66/x
  3. Step 3: Cross multiply
    28,000.30x = 38,626.78 × 17,920.66
  4. Step 4: Simplify right side
    28,000.30x = 692,217,391.27
  5. Step 5: Solve for x
    x = 692,217,391.27/28,000.30
  6. Step 6: Final answer
    x = 24,721.78

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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.