Home / 28,188.38-42,287.42-9,470.21

Finding the Fourth Proportional to 28,188.38, 42,287.42 and 9,470.21

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Solution

The fourth proportional to 28,188.38, 42,287.42 and 9,470.21 is: 14,206.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,188.38 : 42,287.42 = 9,470.21 : x
  2. Step 2: Convert to fraction form
    28,188.38/42,287.42 = 9,470.21/x
  3. Step 3: Cross multiply
    28,188.38x = 42,287.42 × 9,470.21
  4. Step 4: Simplify right side
    28,188.38x = 400,470,560.00
  5. Step 5: Solve for x
    x = 400,470,560.00/28,188.38
  6. Step 6: Final answer
    x = 14,206.94

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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.