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Finding the Fourth Proportional to 29,199.71, 40,253.60 and 20,801.63

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Solution

The fourth proportional to 29,199.71, 40,253.60 and 20,801.63 is: 28,676.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,199.71 : 40,253.60 = 20,801.63 : x
  2. Step 2: Convert to fraction form
    29,199.71/40,253.60 = 20,801.63/x
  3. Step 3: Cross multiply
    29,199.71x = 40,253.60 × 20,801.63
  4. Step 4: Simplify right side
    29,199.71x = 837,340,188.09
  5. Step 5: Solve for x
    x = 837,340,188.09/29,199.71
  6. Step 6: Final answer
    x = 28,676.32

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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.