Home / 28,140.58-42,195.28-11,512.28

Finding the Fourth Proportional to 28,140.58, 42,195.28 and 11,512.28

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Solution

The fourth proportional to 28,140.58, 42,195.28 and 11,512.28 is: 17,262.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,140.58 : 42,195.28 = 11,512.28 : x
  2. Step 2: Convert to fraction form
    28,140.58/42,195.28 = 11,512.28/x
  3. Step 3: Cross multiply
    28,140.58x = 42,195.28 × 11,512.28
  4. Step 4: Simplify right side
    28,140.58x = 485,763,878.04
  5. Step 5: Solve for x
    x = 485,763,878.04/28,140.58
  6. Step 6: Final answer
    x = 17,262.04

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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.