Home / 21,581.64-32,359.47-8,440.20

Finding the Fourth Proportional to 21,581.64, 32,359.47 and 8,440.20

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Solution

The fourth proportional to 21,581.64, 32,359.47 and 8,440.20 is: 12,655.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,581.64 : 32,359.47 = 8,440.20 : x
  2. Step 2: Convert to fraction form
    21,581.64/32,359.47 = 8,440.20/x
  3. Step 3: Cross multiply
    21,581.64x = 32,359.47 × 8,440.20
  4. Step 4: Simplify right side
    21,581.64x = 273,120,398.69
  5. Step 5: Solve for x
    x = 273,120,398.69/21,581.64
  6. Step 6: Final answer
    x = 12,655.22

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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.