Home / 13,447.68-18,555.62-7,479.20

Finding the Fourth Proportional to 13,447.68, 18,555.62 and 7,479.20

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Solution

The fourth proportional to 13,447.68, 18,555.62 and 7,479.20 is: 10,320.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.68 : 18,555.62 = 7,479.20 : x
  2. Step 2: Convert to fraction form
    13,447.68/18,555.62 = 7,479.20/x
  3. Step 3: Cross multiply
    13,447.68x = 18,555.62 × 7,479.20
  4. Step 4: Simplify right side
    13,447.68x = 138,781,062.93
  5. Step 5: Solve for x
    x = 138,781,062.93/13,447.68
  6. Step 6: Final answer
    x = 10,320.07

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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.