Home / 20,601.54-30,902.40-10,210.86

Finding the Fourth Proportional to 20,601.54, 30,902.40 and 10,210.86

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Solution

The fourth proportional to 20,601.54, 30,902.40 and 10,210.86 is: 15,316.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.54 : 30,902.40 = 10,210.86 : x
  2. Step 2: Convert to fraction form
    20,601.54/30,902.40 = 10,210.86/x
  3. Step 3: Cross multiply
    20,601.54x = 30,902.40 × 10,210.86
  4. Step 4: Simplify right side
    20,601.54x = 315,540,080.06
  5. Step 5: Solve for x
    x = 315,540,080.06/20,601.54
  6. Step 6: Final answer
    x = 15,316.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.