Home / 13,446.68-18,556.40-7,479.47

Finding the Fourth Proportional to 13,446.68, 18,556.40 and 7,479.47

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Solution

The fourth proportional to 13,446.68, 18,556.40 and 7,479.47 is: 10,321.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,446.68 : 18,556.40 = 7,479.47 : x
  2. Step 2: Convert to fraction form
    13,446.68/18,556.40 = 7,479.47/x
  3. Step 3: Cross multiply
    13,446.68x = 18,556.40 × 7,479.47
  4. Step 4: Simplify right side
    13,446.68x = 138,792,037.11
  5. Step 5: Solve for x
    x = 138,792,037.11/13,446.68
  6. Step 6: Final answer
    x = 10,321.66

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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.