Home / 31,158.56-42,998.55-17,011.40

Finding the Fourth Proportional to 31,158.56, 42,998.55 and 17,011.40

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Solution

The fourth proportional to 31,158.56, 42,998.55 and 17,011.40 is: 23,475.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,158.56 : 42,998.55 = 17,011.40 : x
  2. Step 2: Convert to fraction form
    31,158.56/42,998.55 = 17,011.40/x
  3. Step 3: Cross multiply
    31,158.56x = 42,998.55 × 17,011.40
  4. Step 4: Simplify right side
    31,158.56x = 731,465,318.48
  5. Step 5: Solve for x
    x = 731,465,318.48/31,158.56
  6. Step 6: Final answer
    x = 23,475.59

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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.