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Finding the Fourth Proportional to 15,615.00, 23,384.97 and 8,931.25

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Solution

The fourth proportional to 15,615.00, 23,384.97 and 8,931.25 is: 13,375.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.00 : 23,384.97 = 8,931.25 : x
  2. Step 2: Convert to fraction form
    15,615.00/23,384.97 = 8,931.25/x
  3. Step 3: Cross multiply
    15,615.00x = 23,384.97 × 8,931.25
  4. Step 4: Simplify right side
    15,615.00x = 208,856,948.68
  5. Step 5: Solve for x
    x = 208,856,948.68/15,615.00
  6. Step 6: Final answer
    x = 13,375.40

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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.