Home / 13,514.19-20,172.51-12,538.53

Finding the Fourth Proportional to 13,514.19, 20,172.51 and 12,538.53

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Solution

The fourth proportional to 13,514.19, 20,172.51 and 12,538.53 is: 18,716.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,514.19 : 20,172.51 = 12,538.53 : x
  2. Step 2: Convert to fraction form
    13,514.19/20,172.51 = 12,538.53/x
  3. Step 3: Cross multiply
    13,514.19x = 20,172.51 × 12,538.53
  4. Step 4: Simplify right side
    13,514.19x = 252,933,621.81
  5. Step 5: Solve for x
    x = 252,933,621.81/13,514.19
  6. Step 6: Final answer
    x = 18,716.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.