Home / 15,508.80-21,402.22-9,221.22

Finding the Fourth Proportional to 15,508.80, 21,402.22 and 9,221.22

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Solution

The fourth proportional to 15,508.80, 21,402.22 and 9,221.22 is: 12,725.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,508.80 : 21,402.22 = 9,221.22 : x
  2. Step 2: Convert to fraction form
    15,508.80/21,402.22 = 9,221.22/x
  3. Step 3: Cross multiply
    15,508.80x = 21,402.22 × 9,221.22
  4. Step 4: Simplify right side
    15,508.80x = 197,354,579.11
  5. Step 5: Solve for x
    x = 197,354,579.11/15,508.80
  6. Step 6: Final answer
    x = 12,725.33

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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.