Home / 20,649.81-28,494.31-12,150.06

Finding the Fourth Proportional to 20,649.81, 28,494.31 and 12,150.06

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Solution

The fourth proportional to 20,649.81, 28,494.31 and 12,150.06 is: 16,765.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.81 : 28,494.31 = 12,150.06 : x
  2. Step 2: Convert to fraction form
    20,649.81/28,494.31 = 12,150.06/x
  3. Step 3: Cross multiply
    20,649.81x = 28,494.31 × 12,150.06
  4. Step 4: Simplify right side
    20,649.81x = 346,207,576.16
  5. Step 5: Solve for x
    x = 346,207,576.16/20,649.81
  6. Step 6: Final answer
    x = 16,765.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.