Home / 28,147.51-42,223.19-9,426.79

Finding the Fourth Proportional to 28,147.51, 42,223.19 and 9,426.79

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Solution

The fourth proportional to 28,147.51, 42,223.19 and 9,426.79 is: 14,140.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147.51 : 42,223.19 = 9,426.79 : x
  2. Step 2: Convert to fraction form
    28,147.51/42,223.19 = 9,426.79/x
  3. Step 3: Cross multiply
    28,147.51x = 42,223.19 × 9,426.79
  4. Step 4: Simplify right side
    28,147.51x = 398,028,992.57
  5. Step 5: Solve for x
    x = 398,028,992.57/28,147.51
  6. Step 6: Final answer
    x = 14,140.83

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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.