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Finding the Fourth Proportional to 15,710, 23,571.06 and 5,321.72

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Solution

The fourth proportional to 15,710, 23,571.06 and 5,321.72 is: 7,984.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,710 : 23,571.06 = 5,321.72 : x
  2. Step 2: Convert to fraction form
    15,710/23,571.06 = 5,321.72/x
  3. Step 3: Cross multiply
    15,710x = 23,571.06 × 5,321.72
  4. Step 4: Simplify right side
    15,710x = 125,438,581.42
  5. Step 5: Solve for x
    x = 125,438,581.42/15,710
  6. Step 6: Final answer
    x = 7,984.63

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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.