Home / 31,278.14-43,164.87-17,131.76

Finding the Fourth Proportional to 31,278.14, 43,164.87 and 17,131.76

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Solution

The fourth proportional to 31,278.14, 43,164.87 and 17,131.76 is: 23,642.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,278.14 : 43,164.87 = 17,131.76 : x
  2. Step 2: Convert to fraction form
    31,278.14/43,164.87 = 17,131.76/x
  3. Step 3: Cross multiply
    31,278.14x = 43,164.87 × 17,131.76
  4. Step 4: Simplify right side
    31,278.14x = 739,490,193.27
  5. Step 5: Solve for x
    x = 739,490,193.27/31,278.14
  6. Step 6: Final answer
    x = 23,642.40

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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.