Home / 20,176.80-30,265.42-6,139.12

Finding the Fourth Proportional to 20,176.80, 30,265.42 and 6,139.12

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Solution

The fourth proportional to 20,176.80, 30,265.42 and 6,139.12 is: 9,208.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,176.80 : 30,265.42 = 6,139.12 : x
  2. Step 2: Convert to fraction form
    20,176.80/30,265.42 = 6,139.12/x
  3. Step 3: Cross multiply
    20,176.80x = 30,265.42 × 6,139.12
  4. Step 4: Simplify right side
    20,176.80x = 185,803,045.23
  5. Step 5: Solve for x
    x = 185,803,045.23/20,176.80
  6. Step 6: Final answer
    x = 9,208.75

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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.