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Finding the Fourth Proportional to 29,289, 40,418.87 and 15,860.37

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Solution

The fourth proportional to 29,289, 40,418.87 and 15,860.37 is: 21,887.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,289 : 40,418.87 = 15,860.37 : x
  2. Step 2: Convert to fraction form
    29,289/40,418.87 = 15,860.37/x
  3. Step 3: Cross multiply
    29,289x = 40,418.87 × 15,860.37
  4. Step 4: Simplify right side
    29,289x = 641,058,233.18
  5. Step 5: Solve for x
    x = 641,058,233.18/29,289
  6. Step 6: Final answer
    x = 21,887.34

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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.