Home / 28,616.25-39,490.98-16,680.30

Finding the Fourth Proportional to 28,616.25, 39,490.98 and 16,680.30

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Solution

The fourth proportional to 28,616.25, 39,490.98 and 16,680.30 is: 23,019.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,616.25 : 39,490.98 = 16,680.30 : x
  2. Step 2: Convert to fraction form
    28,616.25/39,490.98 = 16,680.30/x
  3. Step 3: Cross multiply
    28,616.25x = 39,490.98 × 16,680.30
  4. Step 4: Simplify right side
    28,616.25x = 658,721,393.69
  5. Step 5: Solve for x
    x = 658,721,393.69/28,616.25
  6. Step 6: Final answer
    x = 23,019.14

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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.