Home / 20,599.44-28,439.48-13,538.16

Finding the Fourth Proportional to 20,599.44, 28,439.48 and 13,538.16

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Solution

The fourth proportional to 20,599.44, 28,439.48 and 13,538.16 is: 18,690.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,599.44 : 28,439.48 = 13,538.16 : x
  2. Step 2: Convert to fraction form
    20,599.44/28,439.48 = 13,538.16/x
  3. Step 3: Cross multiply
    20,599.44x = 28,439.48 × 13,538.16
  4. Step 4: Simplify right side
    20,599.44x = 385,018,230.56
  5. Step 5: Solve for x
    x = 385,018,230.56/20,599.44
  6. Step 6: Final answer
    x = 18,690.71

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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.