Home / 20,005.55-30,011.97-6,859.25

Finding the Fourth Proportional to 20,005.55, 30,011.97 and 6,859.25

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Solution

The fourth proportional to 20,005.55, 30,011.97 and 6,859.25 is: 10,290.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,005.55 : 30,011.97 = 6,859.25 : x
  2. Step 2: Convert to fraction form
    20,005.55/30,011.97 = 6,859.25/x
  3. Step 3: Cross multiply
    20,005.55x = 30,011.97 × 6,859.25
  4. Step 4: Simplify right side
    20,005.55x = 205,859,455.16
  5. Step 5: Solve for x
    x = 205,859,455.16/20,005.55
  6. Step 6: Final answer
    x = 10,290.12

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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.