Home / 28,125.20-42,187.80-9,404.48

Finding the Fourth Proportional to 28,125.20, 42,187.80 and 9,404.48

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Solution

The fourth proportional to 28,125.20, 42,187.80 and 9,404.48 is: 14,106.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,125.20 : 42,187.80 = 9,404.48 : x
  2. Step 2: Convert to fraction form
    28,125.20/42,187.80 = 9,404.48/x
  3. Step 3: Cross multiply
    28,125.20x = 42,187.80 × 9,404.48
  4. Step 4: Simplify right side
    28,125.20x = 396,754,321.34
  5. Step 5: Solve for x
    x = 396,754,321.34/28,125.20
  6. Step 6: Final answer
    x = 14,106.72

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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.