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Finding the Fourth Proportional to 18,011.52, 27,017.28 and 4,865.28

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Solution

The fourth proportional to 18,011.52, 27,017.28 and 4,865.28 is: 7,297.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,011.52 : 27,017.28 = 4,865.28 : x
  2. Step 2: Convert to fraction form
    18,011.52/27,017.28 = 4,865.28/x
  3. Step 3: Cross multiply
    18,011.52x = 27,017.28 × 4,865.28
  4. Step 4: Simplify right side
    18,011.52x = 131,446,632.04
  5. Step 5: Solve for x
    x = 131,446,632.04/18,011.52
  6. Step 6: Final answer
    x = 7,297.92

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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.