Home / 25,511.68-38,267.58-7,981.54

Finding the Fourth Proportional to 25,511.68, 38,267.58 and 7,981.54

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Solution

The fourth proportional to 25,511.68, 38,267.58 and 7,981.54 is: 11,972.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,511.68 : 38,267.58 = 7,981.54 : x
  2. Step 2: Convert to fraction form
    25,511.68/38,267.58 = 7,981.54/x
  3. Step 3: Cross multiply
    25,511.68x = 38,267.58 × 7,981.54
  4. Step 4: Simplify right side
    25,511.68x = 305,434,220.47
  5. Step 5: Solve for x
    x = 305,434,220.47/25,511.68
  6. Step 6: Final answer
    x = 11,972.33

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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.