Home / 15,524.11-21,422.63-8,809.60

Finding the Fourth Proportional to 15,524.11, 21,422.63 and 8,809.60

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Solution

The fourth proportional to 15,524.11, 21,422.63 and 8,809.60 is: 12,156.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,524.11 : 21,422.63 = 8,809.60 : x
  2. Step 2: Convert to fraction form
    15,524.11/21,422.63 = 8,809.60/x
  3. Step 3: Cross multiply
    15,524.11x = 21,422.63 × 8,809.60
  4. Step 4: Simplify right side
    15,524.11x = 188,724,801.25
  5. Step 5: Solve for x
    x = 188,724,801.25/15,524.11
  6. Step 6: Final answer
    x = 12,156.88

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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.