Home / 31,911.60-47,867.40-17,914.80

Finding the Fourth Proportional to 31,911.60, 47,867.40 and 17,914.80

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Solution

The fourth proportional to 31,911.60, 47,867.40 and 17,914.80 is: 26,872.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,911.60 : 47,867.40 = 17,914.80 : x
  2. Step 2: Convert to fraction form
    31,911.60/47,867.40 = 17,914.80/x
  3. Step 3: Cross multiply
    31,911.60x = 47,867.40 × 17,914.80
  4. Step 4: Simplify right side
    31,911.60x = 857,534,897.52
  5. Step 5: Solve for x
    x = 857,534,897.52/31,911.60
  6. Step 6: Final answer
    x = 26,872.20

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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.