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Finding the Fourth Proportional to 19,995.66, 27,604.08 and 13,277.88

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Solution

The fourth proportional to 19,995.66, 27,604.08 and 13,277.88 is: 18,330.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,995.66 : 27,604.08 = 13,277.88 : x
  2. Step 2: Convert to fraction form
    19,995.66/27,604.08 = 13,277.88/x
  3. Step 3: Cross multiply
    19,995.66x = 27,604.08 × 13,277.88
  4. Step 4: Simplify right side
    19,995.66x = 366,523,661.75
  5. Step 5: Solve for x
    x = 366,523,661.75/19,995.66
  6. Step 6: Final answer
    x = 18,330.16

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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.