Home / 13,508.71-18,641.48-7,540.22

Finding the Fourth Proportional to 13,508.71, 18,641.48 and 7,540.22

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Solution

The fourth proportional to 13,508.71, 18,641.48 and 7,540.22 is: 10,405.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,508.71 : 18,641.48 = 7,540.22 : x
  2. Step 2: Convert to fraction form
    13,508.71/18,641.48 = 7,540.22/x
  3. Step 3: Cross multiply
    13,508.71x = 18,641.48 × 7,540.22
  4. Step 4: Simplify right side
    13,508.71x = 140,560,869.23
  5. Step 5: Solve for x
    x = 140,560,869.23/13,508.71
  6. Step 6: Final answer
    x = 10,405.20

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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.