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Finding the Fourth Proportional to 12,908.28, 19,371.04 and 4,700.28

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Solution

The fourth proportional to 12,908.28, 19,371.04 and 4,700.28 is: 7,053.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,908.28 : 19,371.04 = 4,700.28 : x
  2. Step 2: Convert to fraction form
    12,908.28/19,371.04 = 4,700.28/x
  3. Step 3: Cross multiply
    12,908.28x = 19,371.04 × 4,700.28
  4. Step 4: Simplify right side
    12,908.28x = 91,049,311.89
  5. Step 5: Solve for x
    x = 91,049,311.89/12,908.28
  6. Step 6: Final answer
    x = 7,053.56

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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.