Home / 11,126.16-15,338.70-10,781.10

Finding the Fourth Proportional to 11,126.16, 15,338.70 and 10,781.10

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Solution

The fourth proportional to 11,126.16, 15,338.70 and 10,781.10 is: 14,862.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,126.16 : 15,338.70 = 10,781.10 : x
  2. Step 2: Convert to fraction form
    11,126.16/15,338.70 = 10,781.10/x
  3. Step 3: Cross multiply
    11,126.16x = 15,338.70 × 10,781.10
  4. Step 4: Simplify right side
    11,126.16x = 165,368,058.57
  5. Step 5: Solve for x
    x = 165,368,058.57/11,126.16
  6. Step 6: Final answer
    x = 14,862.99

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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.