Home / 12,115.13-16,718.79-6,809.95

Finding the Fourth Proportional to 12,115.13, 16,718.79 and 6,809.95

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Solution

The fourth proportional to 12,115.13, 16,718.79 and 6,809.95 is: 9,397.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.13 : 16,718.79 = 6,809.95 : x
  2. Step 2: Convert to fraction form
    12,115.13/16,718.79 = 6,809.95/x
  3. Step 3: Cross multiply
    12,115.13x = 16,718.79 × 6,809.95
  4. Step 4: Simplify right side
    12,115.13x = 113,854,082.16
  5. Step 5: Solve for x
    x = 113,854,082.16/12,115.13
  6. Step 6: Final answer
    x = 9,397.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.