Home / 28,779.75-43,187.85-13,197.78

Finding the Fourth Proportional to 28,779.75, 43,187.85 and 13,197.78

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Solution

The fourth proportional to 28,779.75, 43,187.85 and 13,197.78 is: 19,805.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,779.75 : 43,187.85 = 13,197.78 : x
  2. Step 2: Convert to fraction form
    28,779.75/43,187.85 = 13,197.78/x
  3. Step 3: Cross multiply
    28,779.75x = 43,187.85 × 13,197.78
  4. Step 4: Simplify right side
    28,779.75x = 569,983,742.97
  5. Step 5: Solve for x
    x = 569,983,742.97/28,779.75
  6. Step 6: Final answer
    x = 19,805.03

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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.