Home / 15,742.35-21,724.20-8,669.03

Finding the Fourth Proportional to 15,742.35, 21,724.20 and 8,669.03

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Solution

The fourth proportional to 15,742.35, 21,724.20 and 8,669.03 is: 11,963.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.35 : 21,724.20 = 8,669.03 : x
  2. Step 2: Convert to fraction form
    15,742.35/21,724.20 = 8,669.03/x
  3. Step 3: Cross multiply
    15,742.35x = 21,724.20 × 8,669.03
  4. Step 4: Simplify right side
    15,742.35x = 188,327,632.91
  5. Step 5: Solve for x
    x = 188,327,632.91/15,742.35
  6. Step 6: Final answer
    x = 11,963.12

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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.