Home / 31,505.40-47,268.18-9,318.96

Finding the Fourth Proportional to 31,505.40, 47,268.18 and 9,318.96

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Solution

The fourth proportional to 31,505.40, 47,268.18 and 9,318.96 is: 13,981.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,505.40 : 47,268.18 = 9,318.96 : x
  2. Step 2: Convert to fraction form
    31,505.40/47,268.18 = 9,318.96/x
  3. Step 3: Cross multiply
    31,505.40x = 47,268.18 × 9,318.96
  4. Step 4: Simplify right side
    31,505.40x = 440,490,278.69
  5. Step 5: Solve for x
    x = 440,490,278.69/31,505.40
  6. Step 6: Final answer
    x = 13,981.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.