Home / 18,979.95-26,181.45-11,021.16

Finding the Fourth Proportional to 18,979.95, 26,181.45 and 11,021.16

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Solution

The fourth proportional to 18,979.95, 26,181.45 and 11,021.16 is: 15,202.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.95 : 26,181.45 = 11,021.16 : x
  2. Step 2: Convert to fraction form
    18,979.95/26,181.45 = 11,021.16/x
  3. Step 3: Cross multiply
    18,979.95x = 26,181.45 × 11,021.16
  4. Step 4: Simplify right side
    18,979.95x = 288,549,949.48
  5. Step 5: Solve for x
    x = 288,549,949.48/18,979.95
  6. Step 6: Final answer
    x = 15,202.88

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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.