Home / 20,592.72-28,417.88-11,161.31

Finding the Fourth Proportional to 20,592.72, 28,417.88 and 11,161.31

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Solution

The fourth proportional to 20,592.72, 28,417.88 and 11,161.31 is: 15,402.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,592.72 : 28,417.88 = 11,161.31 : x
  2. Step 2: Convert to fraction form
    20,592.72/28,417.88 = 11,161.31/x
  3. Step 3: Cross multiply
    20,592.72x = 28,417.88 × 11,161.31
  4. Step 4: Simplify right side
    20,592.72x = 317,180,654.04
  5. Step 5: Solve for x
    x = 317,180,654.04/20,592.72
  6. Step 6: Final answer
    x = 15,402.56

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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.