Home / 21,777.60-32,677.20-8,630.40

Finding the Fourth Proportional to 21,777.60, 32,677.20 and 8,630.40

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Solution

The fourth proportional to 21,777.60, 32,677.20 and 8,630.40 is: 12,949.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,777.60 : 32,677.20 = 8,630.40 : x
  2. Step 2: Convert to fraction form
    21,777.60/32,677.20 = 8,630.40/x
  3. Step 3: Cross multiply
    21,777.60x = 32,677.20 × 8,630.40
  4. Step 4: Simplify right side
    21,777.60x = 282,017,306.88
  5. Step 5: Solve for x
    x = 282,017,306.88/21,777.60
  6. Step 6: Final answer
    x = 12,949.88

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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.