Home / 20,225.87-30,316.89-10,351.61

Finding the Fourth Proportional to 20,225.87, 30,316.89 and 10,351.61

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Solution

The fourth proportional to 20,225.87, 30,316.89 and 10,351.61 is: 15,516.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,225.87 : 30,316.89 = 10,351.61 : x
  2. Step 2: Convert to fraction form
    20,225.87/30,316.89 = 10,351.61/x
  3. Step 3: Cross multiply
    20,225.87x = 30,316.89 × 10,351.61
  4. Step 4: Simplify right side
    20,225.87x = 313,828,507.08
  5. Step 5: Solve for x
    x = 313,828,507.08/20,225.87
  6. Step 6: Final answer
    x = 15,516.20

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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.