Home / 28,122.16-42,169.46-9,395.78

Finding the Fourth Proportional to 28,122.16, 42,169.46 and 9,395.78

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Solution

The fourth proportional to 28,122.16, 42,169.46 and 9,395.78 is: 14,089.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,122.16 : 42,169.46 = 9,395.78 : x
  2. Step 2: Convert to fraction form
    28,122.16/42,169.46 = 9,395.78/x
  3. Step 3: Cross multiply
    28,122.16x = 42,169.46 × 9,395.78
  4. Step 4: Simplify right side
    28,122.16x = 396,214,968.88
  5. Step 5: Solve for x
    x = 396,214,968.88/28,122.16
  6. Step 6: Final answer
    x = 14,089.07

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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.