Home / 10,939.46-15,139.77-10,677.38

Finding the Fourth Proportional to 10,939.46, 15,139.77 and 10,677.38

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Solution

The fourth proportional to 10,939.46, 15,139.77 and 10,677.38 is: 14,777.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939.46 : 15,139.77 = 10,677.38 : x
  2. Step 2: Convert to fraction form
    10,939.46/15,139.77 = 10,677.38/x
  3. Step 3: Cross multiply
    10,939.46x = 15,139.77 × 10,677.38
  4. Step 4: Simplify right side
    10,939.46x = 161,653,077.40
  5. Step 5: Solve for x
    x = 161,653,077.40/10,939.46
  6. Step 6: Final answer
    x = 14,777.06

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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.