Home / 18,330.78-25,296.52-9,947.28

Finding the Fourth Proportional to 18,330.78, 25,296.52 and 9,947.28

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Solution

The fourth proportional to 18,330.78, 25,296.52 and 9,947.28 is: 13,727.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,330.78 : 25,296.52 = 9,947.28 : x
  2. Step 2: Convert to fraction form
    18,330.78/25,296.52 = 9,947.28/x
  3. Step 3: Cross multiply
    18,330.78x = 25,296.52 × 9,947.28
  4. Step 4: Simplify right side
    18,330.78x = 251,631,567.47
  5. Step 5: Solve for x
    x = 251,631,567.47/18,330.78
  6. Step 6: Final answer
    x = 13,727.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.