Home / 31,531.40-47,258.70-13,982.60

Finding the Fourth Proportional to 31,531.40, 47,258.70 and 13,982.60

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Solution

The fourth proportional to 31,531.40, 47,258.70 and 13,982.60 is: 20,956.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,531.40 : 47,258.70 = 13,982.60 : x
  2. Step 2: Convert to fraction form
    31,531.40/47,258.70 = 13,982.60/x
  3. Step 3: Cross multiply
    31,531.40x = 47,258.70 × 13,982.60
  4. Step 4: Simplify right side
    31,531.40x = 660,799,498.62
  5. Step 5: Solve for x
    x = 660,799,498.62/31,531.40
  6. Step 6: Final answer
    x = 20,956.87

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1.5x scale

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.