Home / 12,028.80-18,043.20-11,510.40

Finding the Fourth Proportional to 12,028.80, 18,043.20 and 11,510.40

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Solution

The fourth proportional to 12,028.80, 18,043.20 and 11,510.40 is: 17,265.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,028.80 : 18,043.20 = 11,510.40 : x
  2. Step 2: Convert to fraction form
    12,028.80/18,043.20 = 11,510.40/x
  3. Step 3: Cross multiply
    12,028.80x = 18,043.20 × 11,510.40
  4. Step 4: Simplify right side
    12,028.80x = 207,684,449.28
  5. Step 5: Solve for x
    x = 207,684,449.28/12,028.80
  6. Step 6: Final answer
    x = 17,265.60

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1.5x scale

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.