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Finding the Fourth Proportional to 29,107.88, 40,168.87 and 15,859.88

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Solution

The fourth proportional to 29,107.88, 40,168.87 and 15,859.88 is: 21,886.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,107.88 : 40,168.87 = 15,859.88 : x
  2. Step 2: Convert to fraction form
    29,107.88/40,168.87 = 15,859.88/x
  3. Step 3: Cross multiply
    29,107.88x = 40,168.87 × 15,859.88
  4. Step 4: Simplify right side
    29,107.88x = 637,073,457.94
  5. Step 5: Solve for x
    x = 637,073,457.94/29,107.88
  6. Step 6: Final answer
    x = 21,886.63

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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.