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Finding the Fourth Proportional to 29,341.63, 40,491.47 and 15,912.88

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Solution

The fourth proportional to 29,341.63, 40,491.47 and 15,912.88 is: 21,959.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,341.63 : 40,491.47 = 15,912.88 : x
  2. Step 2: Convert to fraction form
    29,341.63/40,491.47 = 15,912.88/x
  3. Step 3: Cross multiply
    29,341.63x = 40,491.47 × 15,912.88
  4. Step 4: Simplify right side
    29,341.63x = 644,335,722.34
  5. Step 5: Solve for x
    x = 644,335,722.34/29,341.63
  6. Step 6: Final answer
    x = 21,959.78

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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.