Home / 38,519.10-57,778.65-18,810.30

Finding the Fourth Proportional to 38,519.10, 57,778.65 and 18,810.30

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Solution

The fourth proportional to 38,519.10, 57,778.65 and 18,810.30 is: 28,215.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,519.10 : 57,778.65 = 18,810.30 : x
  2. Step 2: Convert to fraction form
    38,519.10/57,778.65 = 18,810.30/x
  3. Step 3: Cross multiply
    38,519.10x = 57,778.65 × 18,810.30
  4. Step 4: Simplify right side
    38,519.10x = 1,086,833,740.10
  5. Step 5: Solve for x
    x = 1,086,833,740.10/38,519.10
  6. Step 6: Final answer
    x = 28,215.45

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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.