Home / 20,347.32-28,081.62-12,394.20

Finding the Fourth Proportional to 20,347.32, 28,081.62 and 12,394.20

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Solution

The fourth proportional to 20,347.32, 28,081.62 and 12,394.20 is: 17,105.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,347.32 : 28,081.62 = 12,394.20 : x
  2. Step 2: Convert to fraction form
    20,347.32/28,081.62 = 12,394.20/x
  3. Step 3: Cross multiply
    20,347.32x = 28,081.62 × 12,394.20
  4. Step 4: Simplify right side
    20,347.32x = 348,049,214.60
  5. Step 5: Solve for x
    x = 348,049,214.60/20,347.32
  6. Step 6: Final answer
    x = 17,105.41

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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.