Home / 20,387.48-30,585.82-7,239.84

Finding the Fourth Proportional to 20,387.48, 30,585.82 and 7,239.84

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Solution

The fourth proportional to 20,387.48, 30,585.82 and 7,239.84 is: 10,861.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387.48 : 30,585.82 = 7,239.84 : x
  2. Step 2: Convert to fraction form
    20,387.48/30,585.82 = 7,239.84/x
  3. Step 3: Cross multiply
    20,387.48x = 30,585.82 × 7,239.84
  4. Step 4: Simplify right side
    20,387.48x = 221,436,443.07
  5. Step 5: Solve for x
    x = 221,436,443.07/20,387.48
  6. Step 6: Final answer
    x = 10,861.39

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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.