Home / 15,741.84-21,725.11-8,669.63

Finding the Fourth Proportional to 15,741.84, 21,725.11 and 8,669.63

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Solution

The fourth proportional to 15,741.84, 21,725.11 and 8,669.63 is: 11,964.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,741.84 : 21,725.11 = 8,669.63 : x
  2. Step 2: Convert to fraction form
    15,741.84/21,725.11 = 8,669.63/x
  3. Step 3: Cross multiply
    15,741.84x = 21,725.11 × 8,669.63
  4. Step 4: Simplify right side
    15,741.84x = 188,348,730.56
  5. Step 5: Solve for x
    x = 188,348,730.56/15,741.84
  6. Step 6: Final answer
    x = 11,964.85

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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.