Home / 28,908.30-43,362.45-21,909.90

Finding the Fourth Proportional to 28,908.30, 43,362.45 and 21,909.90

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Solution

The fourth proportional to 28,908.30, 43,362.45 and 21,909.90 is: 32,864.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,908.30 : 43,362.45 = 21,909.90 : x
  2. Step 2: Convert to fraction form
    28,908.30/43,362.45 = 21,909.90/x
  3. Step 3: Cross multiply
    28,908.30x = 43,362.45 × 21,909.90
  4. Step 4: Simplify right side
    28,908.30x = 950,066,943.26
  5. Step 5: Solve for x
    x = 950,066,943.26/28,908.30
  6. Step 6: Final answer
    x = 32,864.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.