Home / 13,447.45-18,556.05-7,478.16

Finding the Fourth Proportional to 13,447.45, 18,556.05 and 7,478.16

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Solution

The fourth proportional to 13,447.45, 18,556.05 and 7,478.16 is: 10,319.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.45 : 18,556.05 = 7,478.16 : x
  2. Step 2: Convert to fraction form
    13,447.45/18,556.05 = 7,478.16/x
  3. Step 3: Cross multiply
    13,447.45x = 18,556.05 × 7,478.16
  4. Step 4: Simplify right side
    13,447.45x = 138,765,110.87
  5. Step 5: Solve for x
    x = 138,765,110.87/13,447.45
  6. Step 6: Final answer
    x = 10,319.07

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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.