Home / 20,964.18-31,409.28-11,081.70

Finding the Fourth Proportional to 20,964.18, 31,409.28 and 11,081.70

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Solution

The fourth proportional to 20,964.18, 31,409.28 and 11,081.70 is: 16,603.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.18 : 31,409.28 = 11,081.70 : x
  2. Step 2: Convert to fraction form
    20,964.18/31,409.28 = 11,081.70/x
  3. Step 3: Cross multiply
    20,964.18x = 31,409.28 × 11,081.70
  4. Step 4: Simplify right side
    20,964.18x = 348,068,218.18
  5. Step 5: Solve for x
    x = 348,068,218.18/20,964.18
  6. Step 6: Final answer
    x = 16,603.00

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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.