Home / 15,446.39-21,315.93-8,372.79

Finding the Fourth Proportional to 15,446.39, 21,315.93 and 8,372.79

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Solution

The fourth proportional to 15,446.39, 21,315.93 and 8,372.79 is: 11,554.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,446.39 : 21,315.93 = 8,372.79 : x
  2. Step 2: Convert to fraction form
    15,446.39/21,315.93 = 8,372.79/x
  3. Step 3: Cross multiply
    15,446.39x = 21,315.93 × 8,372.79
  4. Step 4: Simplify right side
    15,446.39x = 178,473,805.54
  5. Step 5: Solve for x
    x = 178,473,805.54/15,446.39
  6. Step 6: Final answer
    x = 11,554.41

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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.