Home / 21,041.87-29,048.31-13,086.66

Finding the Fourth Proportional to 21,041.87, 29,048.31 and 13,086.66

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Solution

The fourth proportional to 21,041.87, 29,048.31 and 13,086.66 is: 18,066.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,041.87 : 29,048.31 = 13,086.66 : x
  2. Step 2: Convert to fraction form
    21,041.87/29,048.31 = 13,086.66/x
  3. Step 3: Cross multiply
    21,041.87x = 29,048.31 × 13,086.66
  4. Step 4: Simplify right side
    21,041.87x = 380,145,356.54
  5. Step 5: Solve for x
    x = 380,145,356.54/21,041.87
  6. Step 6: Final answer
    x = 18,066.14

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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.