Home / 12,587.82-17,369.84-7,281.64

Finding the Fourth Proportional to 12,587.82, 17,369.84 and 7,281.64

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Solution

The fourth proportional to 12,587.82, 17,369.84 and 7,281.64 is: 10,047.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.82 : 17,369.84 = 7,281.64 : x
  2. Step 2: Convert to fraction form
    12,587.82/17,369.84 = 7,281.64/x
  3. Step 3: Cross multiply
    12,587.82x = 17,369.84 × 7,281.64
  4. Step 4: Simplify right side
    12,587.82x = 126,480,912.64
  5. Step 5: Solve for x
    x = 126,480,912.64/12,587.82
  6. Step 6: Final answer
    x = 10,047.88

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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.