Home / 15,314.56-21,142.12-10,305.12

Finding the Fourth Proportional to 15,314.56, 21,142.12 and 10,305.12

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Solution

The fourth proportional to 15,314.56, 21,142.12 and 10,305.12 is: 14,226.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,314.56 : 21,142.12 = 10,305.12 : x
  2. Step 2: Convert to fraction form
    15,314.56/21,142.12 = 10,305.12/x
  3. Step 3: Cross multiply
    15,314.56x = 21,142.12 × 10,305.12
  4. Step 4: Simplify right side
    15,314.56x = 217,872,083.65
  5. Step 5: Solve for x
    x = 217,872,083.65/15,314.56
  6. Step 6: Final answer
    x = 14,226.47

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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.