Home / 29,685.04-40,908.96-21,729.76

Finding the Fourth Proportional to 29,685.04, 40,908.96 and 21,729.76

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Solution

The fourth proportional to 29,685.04, 40,908.96 and 21,729.76 is: 29,945.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,685.04 : 40,908.96 = 21,729.76 : x
  2. Step 2: Convert to fraction form
    29,685.04/40,908.96 = 21,729.76/x
  3. Step 3: Cross multiply
    29,685.04x = 40,908.96 × 21,729.76
  4. Step 4: Simplify right side
    29,685.04x = 888,941,882.65
  5. Step 5: Solve for x
    x = 888,941,882.65/29,685.04
  6. Step 6: Final answer
    x = 29,945.79

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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.