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Finding the Fourth Proportional to 19,033.20, 28,555.06 and 7,945.10

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Solution

The fourth proportional to 19,033.20, 28,555.06 and 7,945.10 is: 11,919.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,033.20 : 28,555.06 = 7,945.10 : x
  2. Step 2: Convert to fraction form
    19,033.20/28,555.06 = 7,945.10/x
  3. Step 3: Cross multiply
    19,033.20x = 28,555.06 × 7,945.10
  4. Step 4: Simplify right side
    19,033.20x = 226,872,807.21
  5. Step 5: Solve for x
    x = 226,872,807.21/19,033.20
  6. Step 6: Final answer
    x = 11,919.85

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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.