Home / 13,170.50-18,175.30-7,581.50

Finding the Fourth Proportional to 13,170.50, 18,175.30 and 7,581.50

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Solution

The fourth proportional to 13,170.50, 18,175.30 and 7,581.50 is: 10,462.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.50 : 18,175.30 = 7,581.50 : x
  2. Step 2: Convert to fraction form
    13,170.50/18,175.30 = 7,581.50/x
  3. Step 3: Cross multiply
    13,170.50x = 18,175.30 × 7,581.50
  4. Step 4: Simplify right side
    13,170.50x = 137,796,036.95
  5. Step 5: Solve for x
    x = 137,796,036.95/13,170.50
  6. Step 6: Final answer
    x = 10,462.48

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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.