Home / 21,457.20-32,176.20-8,305.20

Finding the Fourth Proportional to 21,457.20, 32,176.20 and 8,305.20

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Solution

The fourth proportional to 21,457.20, 32,176.20 and 8,305.20 is: 12,454.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,457.20 : 32,176.20 = 8,305.20 : x
  2. Step 2: Convert to fraction form
    21,457.20/32,176.20 = 8,305.20/x
  3. Step 3: Cross multiply
    21,457.20x = 32,176.20 × 8,305.20
  4. Step 4: Simplify right side
    21,457.20x = 267,229,776.24
  5. Step 5: Solve for x
    x = 267,229,776.24/21,457.20
  6. Step 6: Final answer
    x = 12,454.08

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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.