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Finding the Fourth Proportional to 29,329.64, 40,474.48 and 15,900.64

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Solution

The fourth proportional to 29,329.64, 40,474.48 and 15,900.64 is: 21,942.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,329.64 : 40,474.48 = 15,900.64 : x
  2. Step 2: Convert to fraction form
    29,329.64/40,474.48 = 15,900.64/x
  3. Step 3: Cross multiply
    29,329.64x = 40,474.48 × 15,900.64
  4. Step 4: Simplify right side
    29,329.64x = 643,570,135.67
  5. Step 5: Solve for x
    x = 643,570,135.67/29,329.64
  6. Step 6: Final answer
    x = 21,942.65

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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.