Home / 28,380.33-42,531.86-13,385.11

Finding the Fourth Proportional to 28,380.33, 42,531.86 and 13,385.11

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Solution

The fourth proportional to 28,380.33, 42,531.86 and 13,385.11 is: 20,059.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,380.33 : 42,531.86 = 13,385.11 : x
  2. Step 2: Convert to fraction form
    28,380.33/42,531.86 = 13,385.11/x
  3. Step 3: Cross multiply
    28,380.33x = 42,531.86 × 13,385.11
  4. Step 4: Simplify right side
    28,380.33x = 569,293,724.52
  5. Step 5: Solve for x
    x = 569,293,724.52/28,380.33
  6. Step 6: Final answer
    x = 20,059.45

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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.