Home / 21,627.99-32,456.70-8,478.72

Finding the Fourth Proportional to 21,627.99, 32,456.70 and 8,478.72

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Solution

The fourth proportional to 21,627.99, 32,456.70 and 8,478.72 is: 12,723.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,627.99 : 32,456.70 = 8,478.72 : x
  2. Step 2: Convert to fraction form
    21,627.99/32,456.70 = 8,478.72/x
  3. Step 3: Cross multiply
    21,627.99x = 32,456.70 × 8,478.72
  4. Step 4: Simplify right side
    21,627.99x = 275,191,271.42
  5. Step 5: Solve for x
    x = 275,191,271.42/21,627.99
  6. Step 6: Final answer
    x = 12,723.85

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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.