Home / 31,781.72-47,674.40-12,059.84

Finding the Fourth Proportional to 31,781.72, 47,674.40 and 12,059.84

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Solution

The fourth proportional to 31,781.72, 47,674.40 and 12,059.84 is: 18,090.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,781.72 : 47,674.40 = 12,059.84 : x
  2. Step 2: Convert to fraction form
    31,781.72/47,674.40 = 12,059.84/x
  3. Step 3: Cross multiply
    31,781.72x = 47,674.40 × 12,059.84
  4. Step 4: Simplify right side
    31,781.72x = 574,945,337.42
  5. Step 5: Solve for x
    x = 574,945,337.42/31,781.72
  6. Step 6: Final answer
    x = 18,090.44

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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.