Home / 21,621.50-32,432.52-7,770.50

Finding the Fourth Proportional to 21,621.50, 32,432.52 and 7,770.50

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Solution

The fourth proportional to 21,621.50, 32,432.52 and 7,770.50 is: 11,655.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,621.50 : 32,432.52 = 7,770.50 : x
  2. Step 2: Convert to fraction form
    21,621.50/32,432.52 = 7,770.50/x
  3. Step 3: Cross multiply
    21,621.50x = 32,432.52 × 7,770.50
  4. Step 4: Simplify right side
    21,621.50x = 252,016,896.66
  5. Step 5: Solve for x
    x = 252,016,896.66/21,621.50
  6. Step 6: Final answer
    x = 11,655.85

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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.