Home / 21,891.38-32,784.43-12,502.95

Finding the Fourth Proportional to 21,891.38, 32,784.43 and 12,502.95

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Solution

The fourth proportional to 21,891.38, 32,784.43 and 12,502.95 is: 18,724.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,891.38 : 32,784.43 = 12,502.95 : x
  2. Step 2: Convert to fraction form
    21,891.38/32,784.43 = 12,502.95/x
  3. Step 3: Cross multiply
    21,891.38x = 32,784.43 × 12,502.95
  4. Step 4: Simplify right side
    21,891.38x = 409,902,089.07
  5. Step 5: Solve for x
    x = 409,902,089.07/21,891.38
  6. Step 6: Final answer
    x = 18,724.36

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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.