Home / 15,115.40-22,676.70-7,317.80

Finding the Fourth Proportional to 15,115.40, 22,676.70 and 7,317.80

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Solution

The fourth proportional to 15,115.40, 22,676.70 and 7,317.80 is: 10,978.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,115.40 : 22,676.70 = 7,317.80 : x
  2. Step 2: Convert to fraction form
    15,115.40/22,676.70 = 7,317.80/x
  3. Step 3: Cross multiply
    15,115.40x = 22,676.70 × 7,317.80
  4. Step 4: Simplify right side
    15,115.40x = 165,943,555.26
  5. Step 5: Solve for x
    x = 165,943,555.26/15,115.40
  6. Step 6: Final answer
    x = 10,978.44

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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.