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Finding the Fourth Proportional to 37,815.50, 52,186.50 and 20,821.52

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Solution

The fourth proportional to 37,815.50, 52,186.50 and 20,821.52 is: 28,734.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,815.50 : 52,186.50 = 20,821.52 : x
  2. Step 2: Convert to fraction form
    37,815.50/52,186.50 = 20,821.52/x
  3. Step 3: Cross multiply
    37,815.50x = 52,186.50 × 20,821.52
  4. Step 4: Simplify right side
    37,815.50x = 1,086,602,253.48
  5. Step 5: Solve for x
    x = 1,086,602,253.48/37,815.50
  6. Step 6: Final answer
    x = 28,734.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.