Home / 10,108.32-15,167.72-7,642.36

Finding the Fourth Proportional to 10,108.32, 15,167.72 and 7,642.36

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Solution

The fourth proportional to 10,108.32, 15,167.72 and 7,642.36 is: 11,467.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,108.32 : 15,167.72 = 7,642.36 : x
  2. Step 2: Convert to fraction form
    10,108.32/15,167.72 = 7,642.36/x
  3. Step 3: Cross multiply
    10,108.32x = 15,167.72 × 7,642.36
  4. Step 4: Simplify right side
    10,108.32x = 115,917,176.62
  5. Step 5: Solve for x
    x = 115,917,176.62/10,108.32
  6. Step 6: Final answer
    x = 11,467.50

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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.