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Finding the Fourth Proportional to 29,099.78, 40,155.78 and 17,162.54

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Solution

The fourth proportional to 29,099.78, 40,155.78 and 17,162.54 is: 23,683.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,099.78 : 40,155.78 = 17,162.54 : x
  2. Step 2: Convert to fraction form
    29,099.78/40,155.78 = 17,162.54/x
  3. Step 3: Cross multiply
    29,099.78x = 40,155.78 × 17,162.54
  4. Step 4: Simplify right side
    29,099.78x = 689,175,180.48
  5. Step 5: Solve for x
    x = 689,175,180.48/29,099.78
  6. Step 6: Final answer
    x = 23,683.17

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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.