Home / 21,967.40-32,951.10-20,498.60

Finding the Fourth Proportional to 21,967.40, 32,951.10 and 20,498.60

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Solution

The fourth proportional to 21,967.40, 32,951.10 and 20,498.60 is: 30,747.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,967.40 : 32,951.10 = 20,498.60 : x
  2. Step 2: Convert to fraction form
    21,967.40/32,951.10 = 20,498.60/x
  3. Step 3: Cross multiply
    21,967.40x = 32,951.10 × 20,498.60
  4. Step 4: Simplify right side
    21,967.40x = 675,451,418.46
  5. Step 5: Solve for x
    x = 675,451,418.46/21,967.40
  6. Step 6: Final answer
    x = 30,747.90

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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.