Home / 20,702.56-30,993.62-18,565.40

Finding the Fourth Proportional to 20,702.56, 30,993.62 and 18,565.40

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Solution

The fourth proportional to 20,702.56, 30,993.62 and 18,565.40 is: 27,794.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.56 : 30,993.62 = 18,565.40 : x
  2. Step 2: Convert to fraction form
    20,702.56/30,993.62 = 18,565.40/x
  3. Step 3: Cross multiply
    20,702.56x = 30,993.62 × 18,565.40
  4. Step 4: Simplify right side
    20,702.56x = 575,408,952.75
  5. Step 5: Solve for x
    x = 575,408,952.75/20,702.56
  6. Step 6: Final answer
    x = 27,794.10

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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.