Home / 20,506.72-28,292.80-11,552.80

Finding the Fourth Proportional to 20,506.72, 28,292.80 and 11,552.80

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Solution

The fourth proportional to 20,506.72, 28,292.80 and 11,552.80 is: 15,939.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.72 : 28,292.80 = 11,552.80 : x
  2. Step 2: Convert to fraction form
    20,506.72/28,292.80 = 11,552.80/x
  3. Step 3: Cross multiply
    20,506.72x = 28,292.80 × 11,552.80
  4. Step 4: Simplify right side
    20,506.72x = 326,861,059.84
  5. Step 5: Solve for x
    x = 326,861,059.84/20,506.72
  6. Step 6: Final answer
    x = 15,939.22

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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.