Home / 10,753.57-16,115.77-7,990.66

Finding the Fourth Proportional to 10,753.57, 16,115.77 and 7,990.66

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Solution

The fourth proportional to 10,753.57, 16,115.77 and 7,990.66 is: 11,975.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,753.57 : 16,115.77 = 7,990.66 : x
  2. Step 2: Convert to fraction form
    10,753.57/16,115.77 = 7,990.66/x
  3. Step 3: Cross multiply
    10,753.57x = 16,115.77 × 7,990.66
  4. Step 4: Simplify right side
    10,753.57x = 128,775,638.71
  5. Step 5: Solve for x
    x = 128,775,638.71/10,753.57
  6. Step 6: Final answer
    x = 11,975.15

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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.