Home / 20,758.57-28,652.93-11,811.07

Finding the Fourth Proportional to 20,758.57, 28,652.93 and 11,811.07

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Solution

The fourth proportional to 20,758.57, 28,652.93 and 11,811.07 is: 16,302.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758.57 : 28,652.93 = 11,811.07 : x
  2. Step 2: Convert to fraction form
    20,758.57/28,652.93 = 11,811.07/x
  3. Step 3: Cross multiply
    20,758.57x = 28,652.93 × 11,811.07
  4. Step 4: Simplify right side
    20,758.57x = 338,421,761.94
  5. Step 5: Solve for x
    x = 338,421,761.94/20,758.57
  6. Step 6: Final answer
    x = 16,302.75

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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.