Home / 18,979.32-28,460.10-11,084.13

Finding the Fourth Proportional to 18,979.32, 28,460.10 and 11,084.13

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Solution

The fourth proportional to 18,979.32, 28,460.10 and 11,084.13 is: 16,621.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.32 : 28,460.10 = 11,084.13 : x
  2. Step 2: Convert to fraction form
    18,979.32/28,460.10 = 11,084.13/x
  3. Step 3: Cross multiply
    18,979.32x = 28,460.10 × 11,084.13
  4. Step 4: Simplify right side
    18,979.32x = 315,455,448.21
  5. Step 5: Solve for x
    x = 315,455,448.21/18,979.32
  6. Step 6: Final answer
    x = 16,621.01

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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.