Home / 18,362.52-25,340.28-9,979

Finding the Fourth Proportional to 18,362.52, 25,340.28 and 9,979

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Solution

The fourth proportional to 18,362.52, 25,340.28 and 9,979 is: 13,771.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,362.52 : 25,340.28 = 9,979 : x
  2. Step 2: Convert to fraction form
    18,362.52/25,340.28 = 9,979/x
  3. Step 3: Cross multiply
    18,362.52x = 25,340.28 × 9,979
  4. Step 4: Simplify right side
    18,362.52x = 252,870,654.12
  5. Step 5: Solve for x
    x = 252,870,654.12/18,362.52
  6. Step 6: Final answer
    x = 13,771.02

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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.