Home / 13,447.09-18,557.67-7,478.88

Finding the Fourth Proportional to 13,447.09, 18,557.67 and 7,478.88

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Solution

The fourth proportional to 13,447.09, 18,557.67 and 7,478.88 is: 10,321.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.09 : 18,557.67 = 7,478.88 : x
  2. Step 2: Convert to fraction form
    13,447.09/18,557.67 = 7,478.88/x
  3. Step 3: Cross multiply
    13,447.09x = 18,557.67 × 7,478.88
  4. Step 4: Simplify right side
    13,447.09x = 138,790,587.01
  5. Step 5: Solve for x
    x = 138,790,587.01/13,447.09
  6. Step 6: Final answer
    x = 10,321.24

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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.