Home / 13,447.60-18,556.80-7,479.12

Finding the Fourth Proportional to 13,447.60, 18,556.80 and 7,479.12

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Solution

The fourth proportional to 13,447.60, 18,556.80 and 7,479.12 is: 10,320.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.60 : 18,556.80 = 7,479.12 : x
  2. Step 2: Convert to fraction form
    13,447.60/18,556.80 = 7,479.12/x
  3. Step 3: Cross multiply
    13,447.60x = 18,556.80 × 7,479.12
  4. Step 4: Simplify right side
    13,447.60x = 138,788,534.02
  5. Step 5: Solve for x
    x = 138,788,534.02/13,447.60
  6. Step 6: Final answer
    x = 10,320.69

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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.