Home / 12,344.21-18,479.97-7,649.13

Finding the Fourth Proportional to 12,344.21, 18,479.97 and 7,649.13

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Solution

The fourth proportional to 12,344.21, 18,479.97 and 7,649.13 is: 11,451.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,344.21 : 18,479.97 = 7,649.13 : x
  2. Step 2: Convert to fraction form
    12,344.21/18,479.97 = 7,649.13/x
  3. Step 3: Cross multiply
    12,344.21x = 18,479.97 × 7,649.13
  4. Step 4: Simplify right side
    12,344.21x = 141,355,688.74
  5. Step 5: Solve for x
    x = 141,355,688.74/12,344.21
  6. Step 6: Final answer
    x = 11,451.17

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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.