Home / 12,306.53-18,457.77-3,992.49

Finding the Fourth Proportional to 12,306.53, 18,457.77 and 3,992.49

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Solution

The fourth proportional to 12,306.53, 18,457.77 and 3,992.49 is: 5,988.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,306.53 : 18,457.77 = 3,992.49 : x
  2. Step 2: Convert to fraction form
    12,306.53/18,457.77 = 3,992.49/x
  3. Step 3: Cross multiply
    12,306.53x = 18,457.77 × 3,992.49
  4. Step 4: Simplify right side
    12,306.53x = 73,692,477.12
  5. Step 5: Solve for x
    x = 73,692,477.12/12,306.53
  6. Step 6: Final answer
    x = 5,988.08

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.