Home / 28,088.39-42,132.45-7,311.89

Finding the Fourth Proportional to 28,088.39, 42,132.45 and 7,311.89

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Solution

The fourth proportional to 28,088.39, 42,132.45 and 7,311.89 is: 10,967.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,088.39 : 42,132.45 = 7,311.89 : x
  2. Step 2: Convert to fraction form
    28,088.39/42,132.45 = 7,311.89/x
  3. Step 3: Cross multiply
    28,088.39x = 42,132.45 × 7,311.89
  4. Step 4: Simplify right side
    28,088.39x = 308,067,839.83
  5. Step 5: Solve for x
    x = 308,067,839.83/28,088.39
  6. Step 6: Final answer
    x = 10,967.80

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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.