Home / 20,077.16-30,119.78-6,930.04

Finding the Fourth Proportional to 20,077.16, 30,119.78 and 6,930.04

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Solution

The fourth proportional to 20,077.16, 30,119.78 and 6,930.04 is: 10,396.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,077.16 : 30,119.78 = 6,930.04 : x
  2. Step 2: Convert to fraction form
    20,077.16/30,119.78 = 6,930.04/x
  3. Step 3: Cross multiply
    20,077.16x = 30,119.78 × 6,930.04
  4. Step 4: Simplify right side
    20,077.16x = 208,731,280.19
  5. Step 5: Solve for x
    x = 208,731,280.19/20,077.16
  6. Step 6: Final answer
    x = 10,396.45

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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.