Home / 28,474.98-42,721.61-13,684.97

Finding the Fourth Proportional to 28,474.98, 42,721.61 and 13,684.97

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Solution

The fourth proportional to 28,474.98, 42,721.61 and 13,684.97 is: 20,531.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,474.98 : 42,721.61 = 13,684.97 : x
  2. Step 2: Convert to fraction form
    28,474.98/42,721.61 = 13,684.97/x
  3. Step 3: Cross multiply
    28,474.98x = 42,721.61 × 13,684.97
  4. Step 4: Simplify right side
    28,474.98x = 584,643,669.17
  5. Step 5: Solve for x
    x = 584,643,669.17/28,474.98
  6. Step 6: Final answer
    x = 20,531.84

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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.