Home / 20,207.68-27,886.64-11,711.45

Finding the Fourth Proportional to 20,207.68, 27,886.64 and 11,711.45

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Solution

The fourth proportional to 20,207.68, 27,886.64 and 11,711.45 is: 16,161.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207.68 : 27,886.64 = 11,711.45 : x
  2. Step 2: Convert to fraction form
    20,207.68/27,886.64 = 11,711.45/x
  3. Step 3: Cross multiply
    20,207.68x = 27,886.64 × 11,711.45
  4. Step 4: Simplify right side
    20,207.68x = 326,593,001.19
  5. Step 5: Solve for x
    x = 326,593,001.19/20,207.68
  6. Step 6: Final answer
    x = 16,161.83

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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.