Home / 15,595.75-21,523.15-8,791.45

Finding the Fourth Proportional to 15,595.75, 21,523.15 and 8,791.45

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Solution

The fourth proportional to 15,595.75, 21,523.15 and 8,791.45 is: 12,132.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,595.75 : 21,523.15 = 8,791.45 : x
  2. Step 2: Convert to fraction form
    15,595.75/21,523.15 = 8,791.45/x
  3. Step 3: Cross multiply
    15,595.75x = 21,523.15 × 8,791.45
  4. Step 4: Simplify right side
    15,595.75x = 189,219,611.43
  5. Step 5: Solve for x
    x = 189,219,611.43/15,595.75
  6. Step 6: Final answer
    x = 12,132.77

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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.