Home / 28,112.21-42,168.31-11,480.08

Finding the Fourth Proportional to 28,112.21, 42,168.31 and 11,480.08

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Solution

The fourth proportional to 28,112.21, 42,168.31 and 11,480.08 is: 17,220.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,112.21 : 42,168.31 = 11,480.08 : x
  2. Step 2: Convert to fraction form
    28,112.21/42,168.31 = 11,480.08/x
  3. Step 3: Cross multiply
    28,112.21x = 42,168.31 × 11,480.08
  4. Step 4: Simplify right side
    28,112.21x = 484,095,304.02
  5. Step 5: Solve for x
    x = 484,095,304.02/28,112.21
  6. Step 6: Final answer
    x = 17,220.11

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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.