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Finding the Fourth Proportional to 15,359.64, 23,020.47 and 7,959.84

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Solution

The fourth proportional to 15,359.64, 23,020.47 and 7,959.84 is: 11,929.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,359.64 : 23,020.47 = 7,959.84 : x
  2. Step 2: Convert to fraction form
    15,359.64/23,020.47 = 7,959.84/x
  3. Step 3: Cross multiply
    15,359.64x = 23,020.47 × 7,959.84
  4. Step 4: Simplify right side
    15,359.64x = 183,239,257.92
  5. Step 5: Solve for x
    x = 183,239,257.92/15,359.64
  6. Step 6: Final answer
    x = 11,929.92

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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.