Home / 15,115.45-22,675.52-7,715.90

Finding the Fourth Proportional to 15,115.45, 22,675.52 and 7,715.90

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Solution

The fourth proportional to 15,115.45, 22,675.52 and 7,715.90 is: 11,575.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,115.45 : 22,675.52 = 7,715.90 : x
  2. Step 2: Convert to fraction form
    15,115.45/22,675.52 = 7,715.90/x
  3. Step 3: Cross multiply
    15,115.45x = 22,675.52 × 7,715.90
  4. Step 4: Simplify right side
    15,115.45x = 174,962,044.77
  5. Step 5: Solve for x
    x = 174,962,044.77/15,115.45
  6. Step 6: Final answer
    x = 11,575.05

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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.