Home / 28,143.18-38,792.93-22,165.38

Finding the Fourth Proportional to 28,143.18, 38,792.93 and 22,165.38

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Solution

The fourth proportional to 28,143.18, 38,792.93 and 22,165.38 is: 30,553.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,143.18 : 38,792.93 = 22,165.38 : x
  2. Step 2: Convert to fraction form
    28,143.18/38,792.93 = 22,165.38/x
  3. Step 3: Cross multiply
    28,143.18x = 38,792.93 × 22,165.38
  4. Step 4: Simplify right side
    28,143.18x = 859,859,923.94
  5. Step 5: Solve for x
    x = 859,859,923.94/28,143.18
  6. Step 6: Final answer
    x = 30,553.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.