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Finding the Fourth Proportional to 25,681.52, 38,523.96 and 7,910

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Solution

The fourth proportional to 25,681.52, 38,523.96 and 7,910 is: 11,865.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,681.52 : 38,523.96 = 7,910 : x
  2. Step 2: Convert to fraction form
    25,681.52/38,523.96 = 7,910/x
  3. Step 3: Cross multiply
    25,681.52x = 38,523.96 × 7,910
  4. Step 4: Simplify right side
    25,681.52x = 304,724,523.60
  5. Step 5: Solve for x
    x = 304,724,523.60/25,681.52
  6. Step 6: Final answer
    x = 11,865.52

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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.