Home / 10,854.68-14,979.76-6,139.68

Finding the Fourth Proportional to 10,854.68, 14,979.76 and 6,139.68

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Solution

The fourth proportional to 10,854.68, 14,979.76 and 6,139.68 is: 8,472.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,854.68 : 14,979.76 = 6,139.68 : x
  2. Step 2: Convert to fraction form
    10,854.68/14,979.76 = 6,139.68/x
  3. Step 3: Cross multiply
    10,854.68x = 14,979.76 × 6,139.68
  4. Step 4: Simplify right side
    10,854.68x = 91,970,932.88
  5. Step 5: Solve for x
    x = 91,970,932.88/10,854.68
  6. Step 6: Final answer
    x = 8,472.93

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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.