Home / 20,209.32-30,301.84-7,730.28

Finding the Fourth Proportional to 20,209.32, 30,301.84 and 7,730.28

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Solution

The fourth proportional to 20,209.32, 30,301.84 and 7,730.28 is: 11,590.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209.32 : 30,301.84 = 7,730.28 : x
  2. Step 2: Convert to fraction form
    20,209.32/30,301.84 = 7,730.28/x
  3. Step 3: Cross multiply
    20,209.32x = 30,301.84 × 7,730.28
  4. Step 4: Simplify right side
    20,209.32x = 234,241,707.72
  5. Step 5: Solve for x
    x = 234,241,707.72/20,209.32
  6. Step 6: Final answer
    x = 11,590.78

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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.