Home / 21,711.60-32,518.80-11,311.20

Finding the Fourth Proportional to 21,711.60, 32,518.80 and 11,311.20

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Solution

The fourth proportional to 21,711.60, 32,518.80 and 11,311.20 is: 16,941.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,711.60 : 32,518.80 = 11,311.20 : x
  2. Step 2: Convert to fraction form
    21,711.60/32,518.80 = 11,311.20/x
  3. Step 3: Cross multiply
    21,711.60x = 32,518.80 × 11,311.20
  4. Step 4: Simplify right side
    21,711.60x = 367,826,650.56
  5. Step 5: Solve for x
    x = 367,826,650.56/21,711.60
  6. Step 6: Final answer
    x = 16,941.48

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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.