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Finding the Fourth Proportional to 15,978.62, 23,957.91 and 4,881.62

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Solution

The fourth proportional to 15,978.62, 23,957.91 and 4,881.62 is: 7,319.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,978.62 : 23,957.91 = 4,881.62 : x
  2. Step 2: Convert to fraction form
    15,978.62/23,957.91 = 4,881.62/x
  3. Step 3: Cross multiply
    15,978.62x = 23,957.91 × 4,881.62
  4. Step 4: Simplify right side
    15,978.62x = 116,953,412.61
  5. Step 5: Solve for x
    x = 116,953,412.61/15,978.62
  6. Step 6: Final answer
    x = 7,319.37

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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.