Home / 20,206.36-27,885.63-11,253.86

Finding the Fourth Proportional to 20,206.36, 27,885.63 and 11,253.86

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Solution

The fourth proportional to 20,206.36, 27,885.63 and 11,253.86 is: 15,530.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,206.36 : 27,885.63 = 11,253.86 : x
  2. Step 2: Convert to fraction form
    20,206.36/27,885.63 = 11,253.86/x
  3. Step 3: Cross multiply
    20,206.36x = 27,885.63 × 11,253.86
  4. Step 4: Simplify right side
    20,206.36x = 313,820,983.38
  5. Step 5: Solve for x
    x = 313,820,983.38/20,206.36
  6. Step 6: Final answer
    x = 15,530.80

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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.