Home / 31,344.40-47,016.60-18,902.80

Finding the Fourth Proportional to 31,344.40, 47,016.60 and 18,902.80

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Solution

The fourth proportional to 31,344.40, 47,016.60 and 18,902.80 is: 28,354.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,344.40 : 47,016.60 = 18,902.80 : x
  2. Step 2: Convert to fraction form
    31,344.40/47,016.60 = 18,902.80/x
  3. Step 3: Cross multiply
    31,344.40x = 47,016.60 × 18,902.80
  4. Step 4: Simplify right side
    31,344.40x = 888,745,386.48
  5. Step 5: Solve for x
    x = 888,745,386.48/31,344.40
  6. Step 6: Final answer
    x = 28,354.20

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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.