Home / 38,543.40-57,750.30-18,779.40

Finding the Fourth Proportional to 38,543.40, 57,750.30 and 18,779.40

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Solution

The fourth proportional to 38,543.40, 57,750.30 and 18,779.40 is: 28,137.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,543.40 : 57,750.30 = 18,779.40 : x
  2. Step 2: Convert to fraction form
    38,543.40/57,750.30 = 18,779.40/x
  3. Step 3: Cross multiply
    38,543.40x = 57,750.30 × 18,779.40
  4. Step 4: Simplify right side
    38,543.40x = 1,084,515,983.82
  5. Step 5: Solve for x
    x = 1,084,515,983.82/38,543.40
  6. Step 6: Final answer
    x = 28,137.53

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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.