Home / 12,587.38-18,869.26-4,261.57

Finding the Fourth Proportional to 12,587.38, 18,869.26 and 4,261.57

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Solution

The fourth proportional to 12,587.38, 18,869.26 and 4,261.57 is: 6,388.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.38 : 18,869.26 = 4,261.57 : x
  2. Step 2: Convert to fraction form
    12,587.38/18,869.26 = 4,261.57/x
  3. Step 3: Cross multiply
    12,587.38x = 18,869.26 × 4,261.57
  4. Step 4: Simplify right side
    12,587.38x = 80,412,672.34
  5. Step 5: Solve for x
    x = 80,412,672.34/12,587.38
  6. Step 6: Final answer
    x = 6,388.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.