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Finding the Fourth Proportional to 29,454.98, 40,659.72 and 20,029.28

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Solution

The fourth proportional to 29,454.98, 40,659.72 and 20,029.28 is: 27,648.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,454.98 : 40,659.72 = 20,029.28 : x
  2. Step 2: Convert to fraction form
    29,454.98/40,659.72 = 20,029.28/x
  3. Step 3: Cross multiply
    29,454.98x = 40,659.72 × 20,029.28
  4. Step 4: Simplify right side
    29,454.98x = 814,384,916.60
  5. Step 5: Solve for x
    x = 814,384,916.60/29,454.98
  6. Step 6: Final answer
    x = 27,648.46

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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.