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Finding the Fourth Proportional to 15,998.60, 23,987.10 and 8,503.40

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Solution

The fourth proportional to 15,998.60, 23,987.10 and 8,503.40 is: 12,749.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,998.60 : 23,987.10 = 8,503.40 : x
  2. Step 2: Convert to fraction form
    15,998.60/23,987.10 = 8,503.40/x
  3. Step 3: Cross multiply
    15,998.60x = 23,987.10 × 8,503.40
  4. Step 4: Simplify right side
    15,998.60x = 203,971,906.14
  5. Step 5: Solve for x
    x = 203,971,906.14/15,998.60
  6. Step 6: Final answer
    x = 12,749.36

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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.