Home / 21,612.05-32,432.66-8,462.78

Finding the Fourth Proportional to 21,612.05, 32,432.66 and 8,462.78

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Solution

The fourth proportional to 21,612.05, 32,432.66 and 8,462.78 is: 12,699.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,612.05 : 32,432.66 = 8,462.78 : x
  2. Step 2: Convert to fraction form
    21,612.05/32,432.66 = 8,462.78/x
  3. Step 3: Cross multiply
    21,612.05x = 32,432.66 × 8,462.78
  4. Step 4: Simplify right side
    21,612.05x = 274,470,568.63
  5. Step 5: Solve for x
    x = 274,470,568.63/21,612.05
  6. Step 6: Final answer
    x = 12,699.88

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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.