Home / 15,742.10-21,724.26-8,669.18

Finding the Fourth Proportional to 15,742.10, 21,724.26 and 8,669.18

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Solution

The fourth proportional to 15,742.10, 21,724.26 and 8,669.18 is: 11,963.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.10 : 21,724.26 = 8,669.18 : x
  2. Step 2: Convert to fraction form
    15,742.10/21,724.26 = 8,669.18/x
  3. Step 3: Cross multiply
    15,742.10x = 21,724.26 × 8,669.18
  4. Step 4: Simplify right side
    15,742.10x = 188,331,520.31
  5. Step 5: Solve for x
    x = 188,331,520.31/15,742.10
  6. Step 6: Final answer
    x = 11,963.56

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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.