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Finding the Fourth Proportional to 15,894.40, 23,841.60 and 8,021.20

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Solution

The fourth proportional to 15,894.40, 23,841.60 and 8,021.20 is: 12,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,894.40 : 23,841.60 = 8,021.20 : x
  2. Step 2: Convert to fraction form
    15,894.40/23,841.60 = 8,021.20/x
  3. Step 3: Cross multiply
    15,894.40x = 23,841.60 × 8,021.20
  4. Step 4: Simplify right side
    15,894.40x = 191,238,241.92
  5. Step 5: Solve for x
    x = 191,238,241.92/15,894.40
  6. Step 6: Final answer
    x = 12,031.80

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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.