Home / 20,121.04-30,148.76-10,246.80

Finding the Fourth Proportional to 20,121.04, 30,148.76 and 10,246.80

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Solution

The fourth proportional to 20,121.04, 30,148.76 and 10,246.80 is: 15,353.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.04 : 30,148.76 = 10,246.80 : x
  2. Step 2: Convert to fraction form
    20,121.04/30,148.76 = 10,246.80/x
  3. Step 3: Cross multiply
    20,121.04x = 30,148.76 × 10,246.80
  4. Step 4: Simplify right side
    20,121.04x = 308,928,313.97
  5. Step 5: Solve for x
    x = 308,928,313.97/20,121.04
  6. Step 6: Final answer
    x = 15,353.50

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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.