Home / 15,343.99-21,175.41-8,629.54

Finding the Fourth Proportional to 15,343.99, 21,175.41 and 8,629.54

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Solution

The fourth proportional to 15,343.99, 21,175.41 and 8,629.54 is: 11,909.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,343.99 : 21,175.41 = 8,629.54 : x
  2. Step 2: Convert to fraction form
    15,343.99/21,175.41 = 8,629.54/x
  3. Step 3: Cross multiply
    15,343.99x = 21,175.41 × 8,629.54
  4. Step 4: Simplify right side
    15,343.99x = 182,734,047.61
  5. Step 5: Solve for x
    x = 182,734,047.61/15,343.99
  6. Step 6: Final answer
    x = 11,909.16

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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.