Home / 10,439.37-15,640.80-8,695.56

Finding the Fourth Proportional to 10,439.37, 15,640.80 and 8,695.56

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Solution

The fourth proportional to 10,439.37, 15,640.80 and 8,695.56 is: 13,028.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,439.37 : 15,640.80 = 8,695.56 : x
  2. Step 2: Convert to fraction form
    10,439.37/15,640.80 = 8,695.56/x
  3. Step 3: Cross multiply
    10,439.37x = 15,640.80 × 8,695.56
  4. Step 4: Simplify right side
    10,439.37x = 136,005,514.85
  5. Step 5: Solve for x
    x = 136,005,514.85/10,439.37
  6. Step 6: Final answer
    x = 13,028.13

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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.