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Finding the Fourth Proportional to 28,812.65, 43,223.02 and 9,092.79

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Solution

The fourth proportional to 28,812.65, 43,223.02 and 9,092.79 is: 13,640.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,812.65 : 43,223.02 = 9,092.79 : x
  2. Step 2: Convert to fraction form
    28,812.65/43,223.02 = 9,092.79/x
  3. Step 3: Cross multiply
    28,812.65x = 43,223.02 × 9,092.79
  4. Step 4: Simplify right side
    28,812.65x = 393,017,821.29
  5. Step 5: Solve for x
    x = 393,017,821.29/28,812.65
  6. Step 6: Final answer
    x = 13,640.46

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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.