Home / 20,886.98-28,825.55-11,934.29

Finding the Fourth Proportional to 20,886.98, 28,825.55 and 11,934.29

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Solution

The fourth proportional to 20,886.98, 28,825.55 and 11,934.29 is: 16,470.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.98 : 28,825.55 = 11,934.29 : x
  2. Step 2: Convert to fraction form
    20,886.98/28,825.55 = 11,934.29/x
  3. Step 3: Cross multiply
    20,886.98x = 28,825.55 × 11,934.29
  4. Step 4: Simplify right side
    20,886.98x = 344,012,269.31
  5. Step 5: Solve for x
    x = 344,012,269.31/20,886.98
  6. Step 6: Final answer
    x = 16,470.18

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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.