Home / 28,165.44-42,259.56-10,640.28

Finding the Fourth Proportional to 28,165.44, 42,259.56 and 10,640.28

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Solution

The fourth proportional to 28,165.44, 42,259.56 and 10,640.28 is: 15,964.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,165.44 : 42,259.56 = 10,640.28 : x
  2. Step 2: Convert to fraction form
    28,165.44/42,259.56 = 10,640.28/x
  3. Step 3: Cross multiply
    28,165.44x = 42,259.56 × 10,640.28
  4. Step 4: Simplify right side
    28,165.44x = 449,653,551.08
  5. Step 5: Solve for x
    x = 449,653,551.08/28,165.44
  6. Step 6: Final answer
    x = 15,964.73

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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.