Home / 28,191.50-42,287.55-11,539.92

Finding the Fourth Proportional to 28,191.50, 42,287.55 and 11,539.92

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Solution

The fourth proportional to 28,191.50, 42,287.55 and 11,539.92 is: 17,310.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191.50 : 42,287.55 = 11,539.92 : x
  2. Step 2: Convert to fraction form
    28,191.50/42,287.55 = 11,539.92/x
  3. Step 3: Cross multiply
    28,191.50x = 42,287.55 × 11,539.92
  4. Step 4: Simplify right side
    28,191.50x = 487,994,944.00
  5. Step 5: Solve for x
    x = 487,994,944.00/28,191.50
  6. Step 6: Final answer
    x = 17,310.00

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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.