Home / 20,535.50-28,339-11,104.06

Finding the Fourth Proportional to 20,535.50, 28,339 and 11,104.06

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Solution

The fourth proportional to 20,535.50, 28,339 and 11,104.06 is: 15,323.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535.50 : 28,339 = 11,104.06 : x
  2. Step 2: Convert to fraction form
    20,535.50/28,339 = 11,104.06/x
  3. Step 3: Cross multiply
    20,535.50x = 28,339 × 11,104.06
  4. Step 4: Simplify right side
    20,535.50x = 314,677,956.34
  5. Step 5: Solve for x
    x = 314,677,956.34/20,535.50
  6. Step 6: Final answer
    x = 15,323.61

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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.