Home / 20,503.16-28,294.46-11,550.80

Finding the Fourth Proportional to 20,503.16, 28,294.46 and 11,550.80

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Solution

The fourth proportional to 20,503.16, 28,294.46 and 11,550.80 is: 15,940.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,503.16 : 28,294.46 = 11,550.80 : x
  2. Step 2: Convert to fraction form
    20,503.16/28,294.46 = 11,550.80/x
  3. Step 3: Cross multiply
    20,503.16x = 28,294.46 × 11,550.80
  4. Step 4: Simplify right side
    20,503.16x = 326,823,661.55
  5. Step 5: Solve for x
    x = 326,823,661.55/20,503.16
  6. Step 6: Final answer
    x = 15,940.16

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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.