Home / 20,148.73-30,215.85-7,665.43

Finding the Fourth Proportional to 20,148.73, 30,215.85 and 7,665.43

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Solution

The fourth proportional to 20,148.73, 30,215.85 and 7,665.43 is: 11,495.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.73 : 30,215.85 = 7,665.43 : x
  2. Step 2: Convert to fraction form
    20,148.73/30,215.85 = 7,665.43/x
  3. Step 3: Cross multiply
    20,148.73x = 30,215.85 × 7,665.43
  4. Step 4: Simplify right side
    20,148.73x = 231,617,483.07
  5. Step 5: Solve for x
    x = 231,617,483.07/20,148.73
  6. Step 6: Final answer
    x = 11,495.39

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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.