Home / 11,726.39-16,182.72-6,421.21

Finding the Fourth Proportional to 11,726.39, 16,182.72 and 6,421.21

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Solution

The fourth proportional to 11,726.39, 16,182.72 and 6,421.21 is: 8,861.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,726.39 : 16,182.72 = 6,421.21 : x
  2. Step 2: Convert to fraction form
    11,726.39/16,182.72 = 6,421.21/x
  3. Step 3: Cross multiply
    11,726.39x = 16,182.72 × 6,421.21
  4. Step 4: Simplify right side
    11,726.39x = 103,912,603.03
  5. Step 5: Solve for x
    x = 103,912,603.03/11,726.39
  6. Step 6: Final answer
    x = 8,861.43

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Half scale
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Double scale
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Similar ratio
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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.