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Finding the Fourth Proportional to 29,148.60, 40,223.90 and 17,215.78

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Solution

The fourth proportional to 29,148.60, 40,223.90 and 17,215.78 is: 23,757.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,148.60 : 40,223.90 = 17,215.78 : x
  2. Step 2: Convert to fraction form
    29,148.60/40,223.90 = 17,215.78/x
  3. Step 3: Cross multiply
    29,148.60x = 40,223.90 × 17,215.78
  4. Step 4: Simplify right side
    29,148.60x = 692,485,813.14
  5. Step 5: Solve for x
    x = 692,485,813.14/29,148.60
  6. Step 6: Final answer
    x = 23,757.09

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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.