Home / 20,649.08-30,930.78-10,087.22

Finding the Fourth Proportional to 20,649.08, 30,930.78 and 10,087.22

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Solution

The fourth proportional to 20,649.08, 30,930.78 and 10,087.22 is: 15,109.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.08 : 30,930.78 = 10,087.22 : x
  2. Step 2: Convert to fraction form
    20,649.08/30,930.78 = 10,087.22/x
  3. Step 3: Cross multiply
    20,649.08x = 30,930.78 × 10,087.22
  4. Step 4: Simplify right side
    20,649.08x = 312,005,582.63
  5. Step 5: Solve for x
    x = 312,005,582.63/20,649.08
  6. Step 6: Final answer
    x = 15,109.90

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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.