Home / 20,620.98-30,923.55-7,470.18

Finding the Fourth Proportional to 20,620.98, 30,923.55 and 7,470.18

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Solution

The fourth proportional to 20,620.98, 30,923.55 and 7,470.18 is: 11,202.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.98 : 30,923.55 = 7,470.18 : x
  2. Step 2: Convert to fraction form
    20,620.98/30,923.55 = 7,470.18/x
  3. Step 3: Cross multiply
    20,620.98x = 30,923.55 × 7,470.18
  4. Step 4: Simplify right side
    20,620.98x = 231,004,484.74
  5. Step 5: Solve for x
    x = 231,004,484.74/20,620.98
  6. Step 6: Final answer
    x = 11,202.40

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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.