Home / 28,355.91-42,533.88-12,755.31

Finding the Fourth Proportional to 28,355.91, 42,533.88 and 12,755.31

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Solution

The fourth proportional to 28,355.91, 42,533.88 and 12,755.31 is: 19,132.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,355.91 : 42,533.88 = 12,755.31 : x
  2. Step 2: Convert to fraction form
    28,355.91/42,533.88 = 12,755.31/x
  3. Step 3: Cross multiply
    28,355.91x = 42,533.88 × 12,755.31
  4. Step 4: Simplify right side
    28,355.91x = 542,532,824.90
  5. Step 5: Solve for x
    x = 542,532,824.90/28,355.91
  6. Step 6: Final answer
    x = 19,132.97

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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.