Home / 12,306.39-18,457.77-3,987.14

Finding the Fourth Proportional to 12,306.39, 18,457.77 and 3,987.14

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Solution

The fourth proportional to 12,306.39, 18,457.77 and 3,987.14 is: 5,980.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,306.39 : 18,457.77 = 3,987.14 : x
  2. Step 2: Convert to fraction form
    12,306.39/18,457.77 = 3,987.14/x
  3. Step 3: Cross multiply
    12,306.39x = 18,457.77 × 3,987.14
  4. Step 4: Simplify right side
    12,306.39x = 73,593,713.08
  5. Step 5: Solve for x
    x = 73,593,713.08/12,306.39
  6. Step 6: Final answer
    x = 5,980.12

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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.