Home / 13,508.48-18,641.36-7,540.40

Finding the Fourth Proportional to 13,508.48, 18,641.36 and 7,540.40

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Solution

The fourth proportional to 13,508.48, 18,641.36 and 7,540.40 is: 10,405.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,508.48 : 18,641.36 = 7,540.40 : x
  2. Step 2: Convert to fraction form
    13,508.48/18,641.36 = 7,540.40/x
  3. Step 3: Cross multiply
    13,508.48x = 18,641.36 × 7,540.40
  4. Step 4: Simplify right side
    13,508.48x = 140,563,310.94
  5. Step 5: Solve for x
    x = 140,563,310.94/13,508.48
  6. Step 6: Final answer
    x = 10,405.56

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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.