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Finding the Fourth Proportional to 15,751.71, 21,727.74 and 9,374.02

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Solution

The fourth proportional to 15,751.71, 21,727.74 and 9,374.02 is: 12,930.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,751.71 : 21,727.74 = 9,374.02 : x
  2. Step 2: Convert to fraction form
    15,751.71/21,727.74 = 9,374.02/x
  3. Step 3: Cross multiply
    15,751.71x = 21,727.74 × 9,374.02
  4. Step 4: Simplify right side
    15,751.71x = 203,676,215.00
  5. Step 5: Solve for x
    x = 203,676,215.00/15,751.71
  6. Step 6: Final answer
    x = 12,930.42

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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.