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Finding the Fourth Proportional to 15,986.80, 23,978.04 and 4,300.72

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Solution

The fourth proportional to 15,986.80, 23,978.04 and 4,300.72 is: 6,450.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,986.80 : 23,978.04 = 4,300.72 : x
  2. Step 2: Convert to fraction form
    15,986.80/23,978.04 = 4,300.72/x
  3. Step 3: Cross multiply
    15,986.80x = 23,978.04 × 4,300.72
  4. Step 4: Simplify right side
    15,986.80x = 103,122,836.19
  5. Step 5: Solve for x
    x = 103,122,836.19/15,986.80
  6. Step 6: Final answer
    x = 6,450.50

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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.