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Finding the Fourth Proportional to 15,757.65, 21,751.13 and 14,076.14

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Solution

The fourth proportional to 15,757.65, 21,751.13 and 14,076.14 is: 19,430.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,757.65 : 21,751.13 = 14,076.14 : x
  2. Step 2: Convert to fraction form
    15,757.65/21,751.13 = 14,076.14/x
  3. Step 3: Cross multiply
    15,757.65x = 21,751.13 × 14,076.14
  4. Step 4: Simplify right side
    15,757.65x = 306,171,771.90
  5. Step 5: Solve for x
    x = 306,171,771.90/15,757.65
  6. Step 6: Final answer
    x = 19,430.04

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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.