Home / 21,630.42-32,431.68-8,484.12

Finding the Fourth Proportional to 21,630.42, 32,431.68 and 8,484.12

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Solution

The fourth proportional to 21,630.42, 32,431.68 and 8,484.12 is: 12,720.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,630.42 : 32,431.68 = 8,484.12 : x
  2. Step 2: Convert to fraction form
    21,630.42/32,431.68 = 8,484.12/x
  3. Step 3: Cross multiply
    21,630.42x = 32,431.68 × 8,484.12
  4. Step 4: Simplify right side
    21,630.42x = 275,154,264.92
  5. Step 5: Solve for x
    x = 275,154,264.92/21,630.42
  6. Step 6: Final answer
    x = 12,720.71

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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.