Home / 20,822.24-28,748.56-12,327.12

Finding the Fourth Proportional to 20,822.24, 28,748.56 and 12,327.12

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Solution

The fourth proportional to 20,822.24, 28,748.56 and 12,327.12 is: 17,019.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,822.24 : 28,748.56 = 12,327.12 : x
  2. Step 2: Convert to fraction form
    20,822.24/28,748.56 = 12,327.12/x
  3. Step 3: Cross multiply
    20,822.24x = 28,748.56 × 12,327.12
  4. Step 4: Simplify right side
    20,822.24x = 354,386,948.95
  5. Step 5: Solve for x
    x = 354,386,948.95/20,822.24
  6. Step 6: Final answer
    x = 17,019.64

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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.