Home / 13,447.12-18,556.62-7,478.56

Finding the Fourth Proportional to 13,447.12, 18,556.62 and 7,478.56

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Solution

The fourth proportional to 13,447.12, 18,556.62 and 7,478.56 is: 10,320.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.12 : 18,556.62 = 7,478.56 : x
  2. Step 2: Convert to fraction form
    13,447.12/18,556.62 = 7,478.56/x
  3. Step 3: Cross multiply
    13,447.12x = 18,556.62 × 7,478.56
  4. Step 4: Simplify right side
    13,447.12x = 138,776,796.07
  5. Step 5: Solve for x
    x = 138,776,796.07/13,447.12
  6. Step 6: Final answer
    x = 10,320.19

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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.