Home / 20,541-28,346.48-11,109.36

Finding the Fourth Proportional to 20,541, 28,346.48 and 11,109.36

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Solution

The fourth proportional to 20,541, 28,346.48 and 11,109.36 is: 15,330.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,541 : 28,346.48 = 11,109.36 : x
  2. Step 2: Convert to fraction form
    20,541/28,346.48 = 11,109.36/x
  3. Step 3: Cross multiply
    20,541x = 28,346.48 × 11,109.36
  4. Step 4: Simplify right side
    20,541x = 314,911,251.05
  5. Step 5: Solve for x
    x = 314,911,251.05/20,541
  6. Step 6: Final answer
    x = 15,330.86

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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.