Home / 20,121.69-30,182.55-6,974.07

Finding the Fourth Proportional to 20,121.69, 30,182.55 and 6,974.07

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Solution

The fourth proportional to 20,121.69, 30,182.55 and 6,974.07 is: 10,461.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.69 : 30,182.55 = 6,974.07 : x
  2. Step 2: Convert to fraction form
    20,121.69/30,182.55 = 6,974.07/x
  3. Step 3: Cross multiply
    20,121.69x = 30,182.55 × 6,974.07
  4. Step 4: Simplify right side
    20,121.69x = 210,495,216.48
  5. Step 5: Solve for x
    x = 210,495,216.48/20,121.69
  6. Step 6: Final answer
    x = 10,461.11

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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.