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Finding the Fourth Proportional to 15,873.89, 23,807.79 and 7,974.29

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Solution

The fourth proportional to 15,873.89, 23,807.79 and 7,974.29 is: 11,959.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,873.89 : 23,807.79 = 7,974.29 : x
  2. Step 2: Convert to fraction form
    15,873.89/23,807.79 = 7,974.29/x
  3. Step 3: Cross multiply
    15,873.89x = 23,807.79 × 7,974.29
  4. Step 4: Simplify right side
    15,873.89x = 189,850,180.64
  5. Step 5: Solve for x
    x = 189,850,180.64/15,873.89
  6. Step 6: Final answer
    x = 11,959.90

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1.5x scale

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.