Home / 38,519.60-57,779.40-18,810.80

Finding the Fourth Proportional to 38,519.60, 57,779.40 and 18,810.80

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Solution

The fourth proportional to 38,519.60, 57,779.40 and 18,810.80 is: 28,216.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,519.60 : 57,779.40 = 18,810.80 : x
  2. Step 2: Convert to fraction form
    38,519.60/57,779.40 = 18,810.80/x
  3. Step 3: Cross multiply
    38,519.60x = 57,779.40 × 18,810.80
  4. Step 4: Simplify right side
    38,519.60x = 1,086,876,737.52
  5. Step 5: Solve for x
    x = 1,086,876,737.52/38,519.60
  6. Step 6: Final answer
    x = 28,216.20

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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.