Home / 13,449.40-18,560.58-7,481.80

Finding the Fourth Proportional to 13,449.40, 18,560.58 and 7,481.80

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Solution

The fourth proportional to 13,449.40, 18,560.58 and 7,481.80 is: 10,325.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,449.40 : 18,560.58 = 7,481.80 : x
  2. Step 2: Convert to fraction form
    13,449.40/18,560.58 = 7,481.80/x
  3. Step 3: Cross multiply
    13,449.40x = 18,560.58 × 7,481.80
  4. Step 4: Simplify right side
    13,449.40x = 138,866,547.44
  5. Step 5: Solve for x
    x = 138,866,547.44/13,449.40
  6. Step 6: Final answer
    x = 10,325.11

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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.