Home / 28,473.80-39,294.05-15,726.62

Finding the Fourth Proportional to 28,473.80, 39,294.05 and 15,726.62

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Solution

The fourth proportional to 28,473.80, 39,294.05 and 15,726.62 is: 21,702.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,473.80 : 39,294.05 = 15,726.62 : x
  2. Step 2: Convert to fraction form
    28,473.80/39,294.05 = 15,726.62/x
  3. Step 3: Cross multiply
    28,473.80x = 39,294.05 × 15,726.62
  4. Step 4: Simplify right side
    28,473.80x = 617,962,612.21
  5. Step 5: Solve for x
    x = 617,962,612.21/28,473.80
  6. Step 6: Final answer
    x = 21,702.85

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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.