Home / 20,306.64-28,026.40-12,351.36

Finding the Fourth Proportional to 20,306.64, 28,026.40 and 12,351.36

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Solution

The fourth proportional to 20,306.64, 28,026.40 and 12,351.36 is: 17,046.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,306.64 : 28,026.40 = 12,351.36 : x
  2. Step 2: Convert to fraction form
    20,306.64/28,026.40 = 12,351.36/x
  3. Step 3: Cross multiply
    20,306.64x = 28,026.40 × 12,351.36
  4. Step 4: Simplify right side
    20,306.64x = 346,164,155.90
  5. Step 5: Solve for x
    x = 346,164,155.90/20,306.64
  6. Step 6: Final answer
    x = 17,046.85

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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.