Home / 12,807.28-19,197.72-9,288.48

Finding the Fourth Proportional to 12,807.28, 19,197.72 and 9,288.48

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Solution

The fourth proportional to 12,807.28, 19,197.72 and 9,288.48 is: 13,923.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,807.28 : 19,197.72 = 9,288.48 : x
  2. Step 2: Convert to fraction form
    12,807.28/19,197.72 = 9,288.48/x
  3. Step 3: Cross multiply
    12,807.28x = 19,197.72 × 9,288.48
  4. Step 4: Simplify right side
    12,807.28x = 178,317,638.27
  5. Step 5: Solve for x
    x = 178,317,638.27/12,807.28
  6. Step 6: Final answer
    x = 13,923.15

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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.