Home / 21,679.28-32,518.46-9,992.49

Finding the Fourth Proportional to 21,679.28, 32,518.46 and 9,992.49

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Solution

The fourth proportional to 21,679.28, 32,518.46 and 9,992.49 is: 14,988.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,679.28 : 32,518.46 = 9,992.49 : x
  2. Step 2: Convert to fraction form
    21,679.28/32,518.46 = 9,992.49/x
  3. Step 3: Cross multiply
    21,679.28x = 32,518.46 × 9,992.49
  4. Step 4: Simplify right side
    21,679.28x = 324,940,336.40
  5. Step 5: Solve for x
    x = 324,940,336.40/21,679.28
  6. Step 6: Final answer
    x = 14,988.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.