Home / 13,447.28-18,556.92-7,478.93

Finding the Fourth Proportional to 13,447.28, 18,556.92 and 7,478.93

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Solution

The fourth proportional to 13,447.28, 18,556.92 and 7,478.93 is: 10,320.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.28 : 18,556.92 = 7,478.93 : x
  2. Step 2: Convert to fraction form
    13,447.28/18,556.92 = 7,478.93/x
  3. Step 3: Cross multiply
    13,447.28x = 18,556.92 × 7,478.93
  4. Step 4: Simplify right side
    13,447.28x = 138,785,905.70
  5. Step 5: Solve for x
    x = 138,785,905.70/13,447.28
  6. Step 6: Final answer
    x = 10,320.74

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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.