Home / 37,820.77-52,190.61-20,821.79

Finding the Fourth Proportional to 37,820.77, 52,190.61 and 20,821.79

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Solution

The fourth proportional to 37,820.77, 52,190.61 and 20,821.79 is: 28,732.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,820.77 : 52,190.61 = 20,821.79 : x
  2. Step 2: Convert to fraction form
    37,820.77/52,190.61 = 20,821.79/x
  3. Step 3: Cross multiply
    37,820.77x = 52,190.61 × 20,821.79
  4. Step 4: Simplify right side
    37,820.77x = 1,086,701,808.98
  5. Step 5: Solve for x
    x = 1,086,701,808.98/37,820.77
  6. Step 6: Final answer
    x = 28,732.94

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Double scale
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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.