Home / 21,836.65-30,134.68-12,405.73

Finding the Fourth Proportional to 21,836.65, 30,134.68 and 12,405.73

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Solution

The fourth proportional to 21,836.65, 30,134.68 and 12,405.73 is: 17,119.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,836.65 : 30,134.68 = 12,405.73 : x
  2. Step 2: Convert to fraction form
    21,836.65/30,134.68 = 12,405.73/x
  3. Step 3: Cross multiply
    21,836.65x = 30,134.68 × 12,405.73
  4. Step 4: Simplify right side
    21,836.65x = 373,842,810.07
  5. Step 5: Solve for x
    x = 373,842,810.07/21,836.65
  6. Step 6: Final answer
    x = 17,119.97

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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.