Home / 13,447.07-18,557.39-7,397.56

Finding the Fourth Proportional to 13,447.07, 18,557.39 and 7,397.56

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Solution

The fourth proportional to 13,447.07, 18,557.39 and 7,397.56 is: 10,208.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.07 : 18,557.39 = 7,397.56 : x
  2. Step 2: Convert to fraction form
    13,447.07/18,557.39 = 7,397.56/x
  3. Step 3: Cross multiply
    13,447.07x = 18,557.39 × 7,397.56
  4. Step 4: Simplify right side
    13,447.07x = 137,279,447.66
  5. Step 5: Solve for x
    x = 137,279,447.66/13,447.07
  6. Step 6: Final answer
    x = 10,208.88

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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.