Home / 28,352.25-39,126.11-15,779.97

Finding the Fourth Proportional to 28,352.25, 39,126.11 and 15,779.97

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Solution

The fourth proportional to 28,352.25, 39,126.11 and 15,779.97 is: 21,776.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,352.25 : 39,126.11 = 15,779.97 : x
  2. Step 2: Convert to fraction form
    28,352.25/39,126.11 = 15,779.97/x
  3. Step 3: Cross multiply
    28,352.25x = 39,126.11 × 15,779.97
  4. Step 4: Simplify right side
    28,352.25x = 617,408,763.12
  5. Step 5: Solve for x
    x = 617,408,763.12/28,352.25
  6. Step 6: Final answer
    x = 21,776.36

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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.