Home / 20,955.18-28,919.07-11,524.08

Finding the Fourth Proportional to 20,955.18, 28,919.07 and 11,524.08

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Solution

The fourth proportional to 20,955.18, 28,919.07 and 11,524.08 is: 15,903.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.18 : 28,919.07 = 11,524.08 : x
  2. Step 2: Convert to fraction form
    20,955.18/28,919.07 = 11,524.08/x
  3. Step 3: Cross multiply
    20,955.18x = 28,919.07 × 11,524.08
  4. Step 4: Simplify right side
    20,955.18x = 333,265,676.21
  5. Step 5: Solve for x
    x = 333,265,676.21/20,955.18
  6. Step 6: Final answer
    x = 15,903.74

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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.