Home / 21,628.16-32,460.48-8,489.76

Finding the Fourth Proportional to 21,628.16, 32,460.48 and 8,489.76

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Solution

The fourth proportional to 21,628.16, 32,460.48 and 8,489.76 is: 12,741.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,628.16 : 32,460.48 = 8,489.76 : x
  2. Step 2: Convert to fraction form
    21,628.16/32,460.48 = 8,489.76/x
  3. Step 3: Cross multiply
    21,628.16x = 32,460.48 × 8,489.76
  4. Step 4: Simplify right side
    21,628.16x = 275,581,684.68
  5. Step 5: Solve for x
    x = 275,581,684.68/21,628.16
  6. Step 6: Final answer
    x = 12,741.80

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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.