Home / 15,581.60-21,502.68-8,508.20

Finding the Fourth Proportional to 15,581.60, 21,502.68 and 8,508.20

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Solution

The fourth proportional to 15,581.60, 21,502.68 and 8,508.20 is: 11,741.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,581.60 : 21,502.68 = 8,508.20 : x
  2. Step 2: Convert to fraction form
    15,581.60/21,502.68 = 8,508.20/x
  3. Step 3: Cross multiply
    15,581.60x = 21,502.68 × 8,508.20
  4. Step 4: Simplify right side
    15,581.60x = 182,949,101.98
  5. Step 5: Solve for x
    x = 182,949,101.98/15,581.60
  6. Step 6: Final answer
    x = 11,741.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.