Home / 20,902.44-28,843.45-12,403.10

Finding the Fourth Proportional to 20,902.44, 28,843.45 and 12,403.10

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Solution

The fourth proportional to 20,902.44, 28,843.45 and 12,403.10 is: 17,115.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902.44 : 28,843.45 = 12,403.10 : x
  2. Step 2: Convert to fraction form
    20,902.44/28,843.45 = 12,403.10/x
  3. Step 3: Cross multiply
    20,902.44x = 28,843.45 × 12,403.10
  4. Step 4: Simplify right side
    20,902.44x = 357,748,089.24
  5. Step 5: Solve for x
    x = 357,748,089.24/20,902.44
  6. Step 6: Final answer
    x = 17,115.14

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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.