Home / 20,932.16-31,353.12-9,822.20

Finding the Fourth Proportional to 20,932.16, 31,353.12 and 9,822.20

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Solution

The fourth proportional to 20,932.16, 31,353.12 and 9,822.20 is: 14,712.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.16 : 31,353.12 = 9,822.20 : x
  2. Step 2: Convert to fraction form
    20,932.16/31,353.12 = 9,822.20/x
  3. Step 3: Cross multiply
    20,932.16x = 31,353.12 × 9,822.20
  4. Step 4: Simplify right side
    20,932.16x = 307,956,458.50
  5. Step 5: Solve for x
    x = 307,956,458.50/20,932.16
  6. Step 6: Final answer
    x = 14,712.12

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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.