Home / 13,416.10-18,514.22-7,447.76

Finding the Fourth Proportional to 13,416.10, 18,514.22 and 7,447.76

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Solution

The fourth proportional to 13,416.10, 18,514.22 and 7,447.76 is: 10,277.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.10 : 18,514.22 = 7,447.76 : x
  2. Step 2: Convert to fraction form
    13,416.10/18,514.22 = 7,447.76/x
  3. Step 3: Cross multiply
    13,416.10x = 18,514.22 × 7,447.76
  4. Step 4: Simplify right side
    13,416.10x = 137,889,467.15
  5. Step 5: Solve for x
    x = 137,889,467.15/13,416.10
  6. Step 6: Final answer
    x = 10,277.91

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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.