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Finding the Fourth Proportional to 15,642.97, 23,460.81 and 7,328.73

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Solution

The fourth proportional to 15,642.97, 23,460.81 and 7,328.73 is: 10,991.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,642.97 : 23,460.81 = 7,328.73 : x
  2. Step 2: Convert to fraction form
    15,642.97/23,460.81 = 7,328.73/x
  3. Step 3: Cross multiply
    15,642.97x = 23,460.81 × 7,328.73
  4. Step 4: Simplify right side
    15,642.97x = 171,937,932.44
  5. Step 5: Solve for x
    x = 171,937,932.44/15,642.97
  6. Step 6: Final answer
    x = 10,991.38

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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.