Home / 12,116.18-16,720.19-7,081.17

Finding the Fourth Proportional to 12,116.18, 16,720.19 and 7,081.17

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Solution

The fourth proportional to 12,116.18, 16,720.19 and 7,081.17 is: 9,771.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,116.18 : 16,720.19 = 7,081.17 : x
  2. Step 2: Convert to fraction form
    12,116.18/16,720.19 = 7,081.17/x
  3. Step 3: Cross multiply
    12,116.18x = 16,720.19 × 7,081.17
  4. Step 4: Simplify right side
    12,116.18x = 118,398,472.42
  5. Step 5: Solve for x
    x = 118,398,472.42/12,116.18
  6. Step 6: Final answer
    x = 9,771.93

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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.