Home / 14,972.96-20,649.57-11,987.71

Finding the Fourth Proportional to 14,972.96, 20,649.57 and 11,987.71

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Solution

The fourth proportional to 14,972.96, 20,649.57 and 11,987.71 is: 16,532.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,972.96 : 20,649.57 = 11,987.71 : x
  2. Step 2: Convert to fraction form
    14,972.96/20,649.57 = 11,987.71/x
  3. Step 3: Cross multiply
    14,972.96x = 20,649.57 × 11,987.71
  4. Step 4: Simplify right side
    14,972.96x = 247,540,960.21
  5. Step 5: Solve for x
    x = 247,540,960.21/14,972.96
  6. Step 6: Final answer
    x = 16,532.53

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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.