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Finding the Fourth Proportional to 15,668.50, 23,503.97 and 5,280.25

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Solution

The fourth proportional to 15,668.50, 23,503.97 and 5,280.25 is: 7,920.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,668.50 : 23,503.97 = 5,280.25 : x
  2. Step 2: Convert to fraction form
    15,668.50/23,503.97 = 5,280.25/x
  3. Step 3: Cross multiply
    15,668.50x = 23,503.97 × 5,280.25
  4. Step 4: Simplify right side
    15,668.50x = 124,106,811.19
  5. Step 5: Solve for x
    x = 124,106,811.19/15,668.50
  6. Step 6: Final answer
    x = 7,920.78

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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.