Home / 20,583.85-28,405.74-11,152.41

Finding the Fourth Proportional to 20,583.85, 28,405.74 and 11,152.41

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Solution

The fourth proportional to 20,583.85, 28,405.74 and 11,152.41 is: 15,390.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,583.85 : 28,405.74 = 11,152.41 : x
  2. Step 2: Convert to fraction form
    20,583.85/28,405.74 = 11,152.41/x
  3. Step 3: Cross multiply
    20,583.85x = 28,405.74 × 11,152.41
  4. Step 4: Simplify right side
    20,583.85x = 316,792,316.80
  5. Step 5: Solve for x
    x = 316,792,316.80/20,583.85
  6. Step 6: Final answer
    x = 15,390.33

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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.