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Finding the Fourth Proportional to 15,931.75, 23,897.63 and 4,987.75

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Solution

The fourth proportional to 15,931.75, 23,897.63 and 4,987.75 is: 7,481.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,931.75 : 23,897.63 = 4,987.75 : x
  2. Step 2: Convert to fraction form
    15,931.75/23,897.63 = 4,987.75/x
  3. Step 3: Cross multiply
    15,931.75x = 23,897.63 × 4,987.75
  4. Step 4: Simplify right side
    15,931.75x = 119,195,404.03
  5. Step 5: Solve for x
    x = 119,195,404.03/15,931.75
  6. Step 6: Final answer
    x = 7,481.63

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1.5x scale

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.