Home / 15,758.20-21,750.78-11,043.64

Finding the Fourth Proportional to 15,758.20, 21,750.78 and 11,043.64

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Solution

The fourth proportional to 15,758.20, 21,750.78 and 11,043.64 is: 15,243.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,758.20 : 21,750.78 = 11,043.64 : x
  2. Step 2: Convert to fraction form
    15,758.20/21,750.78 = 11,043.64/x
  3. Step 3: Cross multiply
    15,758.20x = 21,750.78 × 11,043.64
  4. Step 4: Simplify right side
    15,758.20x = 240,207,784.04
  5. Step 5: Solve for x
    x = 240,207,784.04/15,758.20
  6. Step 6: Final answer
    x = 15,243.35

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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.