Home / 20,209.73-30,320.80-10,355.93

Finding the Fourth Proportional to 20,209.73, 30,320.80 and 10,355.93

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Solution

The fourth proportional to 20,209.73, 30,320.80 and 10,355.93 is: 15,537.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209.73 : 30,320.80 = 10,355.93 : x
  2. Step 2: Convert to fraction form
    20,209.73/30,320.80 = 10,355.93/x
  3. Step 3: Cross multiply
    20,209.73x = 30,320.80 × 10,355.93
  4. Step 4: Simplify right side
    20,209.73x = 314,000,082.34
  5. Step 5: Solve for x
    x = 314,000,082.34/20,209.73
  6. Step 6: Final answer
    x = 15,537.07

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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.