Home / 28,164.08-38,864.32-15,589.04

Finding the Fourth Proportional to 28,164.08, 38,864.32 and 15,589.04

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Solution

The fourth proportional to 28,164.08, 38,864.32 and 15,589.04 is: 21,511.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,164.08 : 38,864.32 = 15,589.04 : x
  2. Step 2: Convert to fraction form
    28,164.08/38,864.32 = 15,589.04/x
  3. Step 3: Cross multiply
    28,164.08x = 38,864.32 × 15,589.04
  4. Step 4: Simplify right side
    28,164.08x = 605,857,439.05
  5. Step 5: Solve for x
    x = 605,857,439.05/28,164.08
  6. Step 6: Final answer
    x = 21,511.71

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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.