Home / 15,186.24-20,940.48-9,871.20

Finding the Fourth Proportional to 15,186.24, 20,940.48 and 9,871.20

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Solution

The fourth proportional to 15,186.24, 20,940.48 and 9,871.20 is: 13,611.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,186.24 : 20,940.48 = 9,871.20 : x
  2. Step 2: Convert to fraction form
    15,186.24/20,940.48 = 9,871.20/x
  3. Step 3: Cross multiply
    15,186.24x = 20,940.48 × 9,871.20
  4. Step 4: Simplify right side
    15,186.24x = 206,707,666.18
  5. Step 5: Solve for x
    x = 206,707,666.18/15,186.24
  6. Step 6: Final answer
    x = 13,611.51

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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.