Home / 20,669.32-28,523.78-11,237.96

Finding the Fourth Proportional to 20,669.32, 28,523.78 and 11,237.96

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Solution

The fourth proportional to 20,669.32, 28,523.78 and 11,237.96 is: 15,508.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.32 : 28,523.78 = 11,237.96 : x
  2. Step 2: Convert to fraction form
    20,669.32/28,523.78 = 11,237.96/x
  3. Step 3: Cross multiply
    20,669.32x = 28,523.78 × 11,237.96
  4. Step 4: Simplify right side
    20,669.32x = 320,549,098.69
  5. Step 5: Solve for x
    x = 320,549,098.69/20,669.32
  6. Step 6: Final answer
    x = 15,508.45

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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.