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Finding the Fourth Proportional to 29,135, 40,206.30 and 15,887

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Solution

The fourth proportional to 29,135, 40,206.30 and 15,887 is: 21,924.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,135 : 40,206.30 = 15,887 : x
  2. Step 2: Convert to fraction form
    29,135/40,206.30 = 15,887/x
  3. Step 3: Cross multiply
    29,135x = 40,206.30 × 15,887
  4. Step 4: Simplify right side
    29,135x = 638,757,488.10
  5. Step 5: Solve for x
    x = 638,757,488.10/29,135
  6. Step 6: Final answer
    x = 21,924.06

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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.