Home / 12,085.99-16,678.92-6,781.17

Finding the Fourth Proportional to 12,085.99, 16,678.92 and 6,781.17

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Solution

The fourth proportional to 12,085.99, 16,678.92 and 6,781.17 is: 9,358.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,085.99 : 16,678.92 = 6,781.17 : x
  2. Step 2: Convert to fraction form
    12,085.99/16,678.92 = 6,781.17/x
  3. Step 3: Cross multiply
    12,085.99x = 16,678.92 × 6,781.17
  4. Step 4: Simplify right side
    12,085.99x = 113,102,591.94
  5. Step 5: Solve for x
    x = 113,102,591.94/12,085.99
  6. Step 6: Final answer
    x = 9,358.16

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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.