Home / 20,317.79-30,488.78-9,072.25

Finding the Fourth Proportional to 20,317.79, 30,488.78 and 9,072.25

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Solution

The fourth proportional to 20,317.79, 30,488.78 and 9,072.25 is: 13,613.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.79 : 30,488.78 = 9,072.25 : x
  2. Step 2: Convert to fraction form
    20,317.79/30,488.78 = 9,072.25/x
  3. Step 3: Cross multiply
    20,317.79x = 30,488.78 × 9,072.25
  4. Step 4: Simplify right side
    20,317.79x = 276,601,780.81
  5. Step 5: Solve for x
    x = 276,601,780.81/20,317.79
  6. Step 6: Final answer
    x = 13,613.78

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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.