Home / 15,747.84-21,732.36-8,674.56

Finding the Fourth Proportional to 15,747.84, 21,732.36 and 8,674.56

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Solution

The fourth proportional to 15,747.84, 21,732.36 and 8,674.56 is: 11,971.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,747.84 : 21,732.36 = 8,674.56 : x
  2. Step 2: Convert to fraction form
    15,747.84/21,732.36 = 8,674.56/x
  3. Step 3: Cross multiply
    15,747.84x = 21,732.36 × 8,674.56
  4. Step 4: Simplify right side
    15,747.84x = 188,518,660.76
  5. Step 5: Solve for x
    x = 188,518,660.76/15,747.84
  6. Step 6: Final answer
    x = 11,971.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.