Home / 13,416.36-18,514.51-7,447.98

Finding the Fourth Proportional to 13,416.36, 18,514.51 and 7,447.98

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Solution

The fourth proportional to 13,416.36, 18,514.51 and 7,447.98 is: 10,278.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.36 : 18,514.51 = 7,447.98 : x
  2. Step 2: Convert to fraction form
    13,416.36/18,514.51 = 7,447.98/x
  3. Step 3: Cross multiply
    13,416.36x = 18,514.51 × 7,447.98
  4. Step 4: Simplify right side
    13,416.36x = 137,895,700.19
  5. Step 5: Solve for x
    x = 137,895,700.19/13,416.36
  6. Step 6: Final answer
    x = 10,278.18

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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.