Home / 20,260.78-30,404.75-7,113.19

Finding the Fourth Proportional to 20,260.78, 30,404.75 and 7,113.19

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Solution

The fourth proportional to 20,260.78, 30,404.75 and 7,113.19 is: 10,674.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,260.78 : 30,404.75 = 7,113.19 : x
  2. Step 2: Convert to fraction form
    20,260.78/30,404.75 = 7,113.19/x
  3. Step 3: Cross multiply
    20,260.78x = 30,404.75 × 7,113.19
  4. Step 4: Simplify right side
    20,260.78x = 216,274,763.65
  5. Step 5: Solve for x
    x = 216,274,763.65/20,260.78
  6. Step 6: Final answer
    x = 10,674.55

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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.