Home / 21,895.29-30,213.31-12,334.91

Finding the Fourth Proportional to 21,895.29, 30,213.31 and 12,334.91

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Solution

The fourth proportional to 21,895.29, 30,213.31 and 12,334.91 is: 17,020.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,895.29 : 30,213.31 = 12,334.91 : x
  2. Step 2: Convert to fraction form
    21,895.29/30,213.31 = 12,334.91/x
  3. Step 3: Cross multiply
    21,895.29x = 30,213.31 × 12,334.91
  4. Step 4: Simplify right side
    21,895.29x = 372,678,459.65
  5. Step 5: Solve for x
    x = 372,678,459.65/21,895.29
  6. Step 6: Final answer
    x = 17,020.94

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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.