Home / 20,560.30-30,767.55-13,999.30

Finding the Fourth Proportional to 20,560.30, 30,767.55 and 13,999.30

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Solution

The fourth proportional to 20,560.30, 30,767.55 and 13,999.30 is: 20,949.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,560.30 : 30,767.55 = 13,999.30 : x
  2. Step 2: Convert to fraction form
    20,560.30/30,767.55 = 13,999.30/x
  3. Step 3: Cross multiply
    20,560.30x = 30,767.55 × 13,999.30
  4. Step 4: Simplify right side
    20,560.30x = 430,724,162.72
  5. Step 5: Solve for x
    x = 430,724,162.72/20,560.30
  6. Step 6: Final answer
    x = 20,949.31

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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.