Home / 15,805.11-21,815.40-9,833.22

Finding the Fourth Proportional to 15,805.11, 21,815.40 and 9,833.22

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Solution

The fourth proportional to 15,805.11, 21,815.40 and 9,833.22 is: 13,572.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,805.11 : 21,815.40 = 9,833.22 : x
  2. Step 2: Convert to fraction form
    15,805.11/21,815.40 = 9,833.22/x
  3. Step 3: Cross multiply
    15,805.11x = 21,815.40 × 9,833.22
  4. Step 4: Simplify right side
    15,805.11x = 214,515,627.59
  5. Step 5: Solve for x
    x = 214,515,627.59/15,805.11
  6. Step 6: Final answer
    x = 13,572.55

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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.