Home / 20,995.46-28,972.86-12,036.68

Finding the Fourth Proportional to 20,995.46, 28,972.86 and 12,036.68

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Solution

The fourth proportional to 20,995.46, 28,972.86 and 12,036.68 is: 16,610.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.46 : 28,972.86 = 12,036.68 : x
  2. Step 2: Convert to fraction form
    20,995.46/28,972.86 = 12,036.68/x
  3. Step 3: Cross multiply
    20,995.46x = 28,972.86 × 12,036.68
  4. Step 4: Simplify right side
    20,995.46x = 348,737,044.50
  5. Step 5: Solve for x
    x = 348,737,044.50/20,995.46
  6. Step 6: Final answer
    x = 16,610.12

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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.