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Finding the Fourth Proportional to 28,951.61, 43,428.29 and 9,976.01

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Solution

The fourth proportional to 28,951.61, 43,428.29 and 9,976.01 is: 14,964.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,951.61 : 43,428.29 = 9,976.01 : x
  2. Step 2: Convert to fraction form
    28,951.61/43,428.29 = 9,976.01/x
  3. Step 3: Cross multiply
    28,951.61x = 43,428.29 × 9,976.01
  4. Step 4: Simplify right side
    28,951.61x = 433,240,788.30
  5. Step 5: Solve for x
    x = 433,240,788.30/28,951.61
  6. Step 6: Final answer
    x = 14,964.31

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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.