Home / 20,127.54-30,199.85-10,765.13

Finding the Fourth Proportional to 20,127.54, 30,199.85 and 10,765.13

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Solution

The fourth proportional to 20,127.54, 30,199.85 and 10,765.13 is: 16,152.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.54 : 30,199.85 = 10,765.13 : x
  2. Step 2: Convert to fraction form
    20,127.54/30,199.85 = 10,765.13/x
  3. Step 3: Cross multiply
    20,127.54x = 30,199.85 × 10,765.13
  4. Step 4: Simplify right side
    20,127.54x = 325,105,311.23
  5. Step 5: Solve for x
    x = 325,105,311.23/20,127.54
  6. Step 6: Final answer
    x = 16,152.26

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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.