Home / 20,225.74-30,318.08-7,742.56

Finding the Fourth Proportional to 20,225.74, 30,318.08 and 7,742.56

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Solution

The fourth proportional to 20,225.74, 30,318.08 and 7,742.56 is: 11,605.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,225.74 : 30,318.08 = 7,742.56 : x
  2. Step 2: Convert to fraction form
    20,225.74/30,318.08 = 7,742.56/x
  3. Step 3: Cross multiply
    20,225.74x = 30,318.08 × 7,742.56
  4. Step 4: Simplify right side
    20,225.74x = 234,739,553.48
  5. Step 5: Solve for x
    x = 234,739,553.48/20,225.74
  6. Step 6: Final answer
    x = 11,605.98

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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.