Home / 20,523.08-28,321.98-11,091.62

Finding the Fourth Proportional to 20,523.08, 28,321.98 and 11,091.62

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Solution

The fourth proportional to 20,523.08, 28,321.98 and 11,091.62 is: 15,306.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,523.08 : 28,321.98 = 11,091.62 : x
  2. Step 2: Convert to fraction form
    20,523.08/28,321.98 = 11,091.62/x
  3. Step 3: Cross multiply
    20,523.08x = 28,321.98 × 11,091.62
  4. Step 4: Simplify right side
    20,523.08x = 314,136,639.81
  5. Step 5: Solve for x
    x = 314,136,639.81/20,523.08
  6. Step 6: Final answer
    x = 15,306.51

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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.