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Finding the Fourth Proportional to 18,618.78, 27,937.02 and 7,533.12

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Solution

The fourth proportional to 18,618.78, 27,937.02 and 7,533.12 is: 11,303.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,618.78 : 27,937.02 = 7,533.12 : x
  2. Step 2: Convert to fraction form
    18,618.78/27,937.02 = 7,533.12/x
  3. Step 3: Cross multiply
    18,618.78x = 27,937.02 × 7,533.12
  4. Step 4: Simplify right side
    18,618.78x = 210,452,924.10
  5. Step 5: Solve for x
    x = 210,452,924.10/18,618.78
  6. Step 6: Final answer
    x = 11,303.26

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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.