Home / 13,080.20-18,050.30-7,415.48

Finding the Fourth Proportional to 13,080.20, 18,050.30 and 7,415.48

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Solution

The fourth proportional to 13,080.20, 18,050.30 and 7,415.48 is: 10,233.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.20 : 18,050.30 = 7,415.48 : x
  2. Step 2: Convert to fraction form
    13,080.20/18,050.30 = 7,415.48/x
  3. Step 3: Cross multiply
    13,080.20x = 18,050.30 × 7,415.48
  4. Step 4: Simplify right side
    13,080.20x = 133,851,566.93
  5. Step 5: Solve for x
    x = 133,851,566.93/13,080.20
  6. Step 6: Final answer
    x = 10,233.14

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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.