Home / 15,012.24-20,715.80-8,297.49

Finding the Fourth Proportional to 15,012.24, 20,715.80 and 8,297.49

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Solution

The fourth proportional to 15,012.24, 20,715.80 and 8,297.49 is: 11,449.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,012.24 : 20,715.80 = 8,297.49 : x
  2. Step 2: Convert to fraction form
    15,012.24/20,715.80 = 8,297.49/x
  3. Step 3: Cross multiply
    15,012.24x = 20,715.80 × 8,297.49
  4. Step 4: Simplify right side
    15,012.24x = 171,889,101.85
  5. Step 5: Solve for x
    x = 171,889,101.85/15,012.24
  6. Step 6: Final answer
    x = 11,449.93

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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.