Home / 11,678.27-16,116.47-6,642.95

Finding the Fourth Proportional to 11,678.27, 16,116.47 and 6,642.95

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Solution

The fourth proportional to 11,678.27, 16,116.47 and 6,642.95 is: 9,167.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,678.27 : 16,116.47 = 6,642.95 : x
  2. Step 2: Convert to fraction form
    11,678.27/16,116.47 = 6,642.95/x
  3. Step 3: Cross multiply
    11,678.27x = 16,116.47 × 6,642.95
  4. Step 4: Simplify right side
    11,678.27x = 107,060,790.59
  5. Step 5: Solve for x
    x = 107,060,790.59/11,678.27
  6. Step 6: Final answer
    x = 9,167.53

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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.