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Finding the Fourth Proportional to 29,009.88, 40,019.40 and 18,933.66

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Solution

The fourth proportional to 29,009.88, 40,019.40 and 18,933.66 is: 26,119.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,009.88 : 40,019.40 = 18,933.66 : x
  2. Step 2: Convert to fraction form
    29,009.88/40,019.40 = 18,933.66/x
  3. Step 3: Cross multiply
    29,009.88x = 40,019.40 × 18,933.66
  4. Step 4: Simplify right side
    29,009.88x = 757,713,713.00
  5. Step 5: Solve for x
    x = 757,713,713.00/29,009.88
  6. Step 6: Final answer
    x = 26,119.16

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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.