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Finding the Fourth Proportional to 18,889.36, 28,311.16 and 7,033.52

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Solution

The fourth proportional to 18,889.36, 28,311.16 and 7,033.52 is: 10,541.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,889.36 : 28,311.16 = 7,033.52 : x
  2. Step 2: Convert to fraction form
    18,889.36/28,311.16 = 7,033.52/x
  3. Step 3: Cross multiply
    18,889.36x = 28,311.16 × 7,033.52
  4. Step 4: Simplify right side
    18,889.36x = 199,127,110.08
  5. Step 5: Solve for x
    x = 199,127,110.08/18,889.36
  6. Step 6: Final answer
    x = 10,541.76

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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.