Home / 18,861.12-28,290.87-5,712.93

Finding the Fourth Proportional to 18,861.12, 28,290.87 and 5,712.93

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Solution

The fourth proportional to 18,861.12, 28,290.87 and 5,712.93 is: 8,569.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,861.12 : 28,290.87 = 5,712.93 : x
  2. Step 2: Convert to fraction form
    18,861.12/28,290.87 = 5,712.93/x
  3. Step 3: Cross multiply
    18,861.12x = 28,290.87 × 5,712.93
  4. Step 4: Simplify right side
    18,861.12x = 161,623,759.95
  5. Step 5: Solve for x
    x = 161,623,759.95/18,861.12
  6. Step 6: Final answer
    x = 8,569.15

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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.