Home / 28,687.38-43,029.90-9,971.66

Finding the Fourth Proportional to 28,687.38, 43,029.90 and 9,971.66

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Solution

The fourth proportional to 28,687.38, 43,029.90 and 9,971.66 is: 14,957.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,687.38 : 43,029.90 = 9,971.66 : x
  2. Step 2: Convert to fraction form
    28,687.38/43,029.90 = 9,971.66/x
  3. Step 3: Cross multiply
    28,687.38x = 43,029.90 × 9,971.66
  4. Step 4: Simplify right side
    28,687.38x = 429,079,532.63
  5. Step 5: Solve for x
    x = 429,079,532.63/28,687.38
  6. Step 6: Final answer
    x = 14,957.08

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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.