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Finding the Fourth Proportional to 19,304.64, 28,958.16 and 6,655.12

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Solution

The fourth proportional to 19,304.64, 28,958.16 and 6,655.12 is: 9,983.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,304.64 : 28,958.16 = 6,655.12 : x
  2. Step 2: Convert to fraction form
    19,304.64/28,958.16 = 6,655.12/x
  3. Step 3: Cross multiply
    19,304.64x = 28,958.16 × 6,655.12
  4. Step 4: Simplify right side
    19,304.64x = 192,720,029.78
  5. Step 5: Solve for x
    x = 192,720,029.78/19,304.64
  6. Step 6: Final answer
    x = 9,983.09

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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.