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Finding the Fourth Proportional to 19,168.16, 28,751.54 and 9,304.79

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Solution

The fourth proportional to 19,168.16, 28,751.54 and 9,304.79 is: 13,956.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,168.16 : 28,751.54 = 9,304.79 : x
  2. Step 2: Convert to fraction form
    19,168.16/28,751.54 = 9,304.79/x
  3. Step 3: Cross multiply
    19,168.16x = 28,751.54 × 9,304.79
  4. Step 4: Simplify right side
    19,168.16x = 267,526,851.59
  5. Step 5: Solve for x
    x = 267,526,851.59/19,168.16
  6. Step 6: Final answer
    x = 13,956.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.