Home / 15,769.84-21,742.41-10,391.44

Finding the Fourth Proportional to 15,769.84, 21,742.41 and 10,391.44

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Solution

The fourth proportional to 15,769.84, 21,742.41 and 10,391.44 is: 14,327.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,769.84 : 21,742.41 = 10,391.44 : x
  2. Step 2: Convert to fraction form
    15,769.84/21,742.41 = 10,391.44/x
  3. Step 3: Cross multiply
    15,769.84x = 21,742.41 × 10,391.44
  4. Step 4: Simplify right side
    15,769.84x = 225,934,948.97
  5. Step 5: Solve for x
    x = 225,934,948.97/15,769.84
  6. Step 6: Final answer
    x = 14,327.03

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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.