Home / 12,261.43-18,372.70-6,986.71

Finding the Fourth Proportional to 12,261.43, 18,372.70 and 6,986.71

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Solution

The fourth proportional to 12,261.43, 18,372.70 and 6,986.71 is: 10,468.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,261.43 : 18,372.70 = 6,986.71 : x
  2. Step 2: Convert to fraction form
    12,261.43/18,372.70 = 6,986.71/x
  3. Step 3: Cross multiply
    12,261.43x = 18,372.70 × 6,986.71
  4. Step 4: Simplify right side
    12,261.43x = 128,364,726.82
  5. Step 5: Solve for x
    x = 128,364,726.82/12,261.43
  6. Step 6: Final answer
    x = 10,468.99

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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.