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Finding the Fourth Proportional to 15,328.97, 23,000.47 and 7,929.42

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Solution

The fourth proportional to 15,328.97, 23,000.47 and 7,929.42 is: 11,897.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,328.97 : 23,000.47 = 7,929.42 : x
  2. Step 2: Convert to fraction form
    15,328.97/23,000.47 = 7,929.42/x
  3. Step 3: Cross multiply
    15,328.97x = 23,000.47 × 7,929.42
  4. Step 4: Simplify right side
    15,328.97x = 182,380,386.83
  5. Step 5: Solve for x
    x = 182,380,386.83/15,328.97
  6. Step 6: Final answer
    x = 11,897.76

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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.