Home / 12,080.28-18,120.18-6,875

Finding the Fourth Proportional to 12,080.28, 18,120.18 and 6,875

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Solution

The fourth proportional to 12,080.28, 18,120.18 and 6,875 is: 10,312.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,080.28 : 18,120.18 = 6,875 : x
  2. Step 2: Convert to fraction form
    12,080.28/18,120.18 = 6,875/x
  3. Step 3: Cross multiply
    12,080.28x = 18,120.18 × 6,875
  4. Step 4: Simplify right side
    12,080.28x = 124,576,237.50
  5. Step 5: Solve for x
    x = 124,576,237.50/12,080.28
  6. Step 6: Final answer
    x = 10,312.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.