Home / 20,590.54-28,419.15-11,638.42

Finding the Fourth Proportional to 20,590.54, 28,419.15 and 11,638.42

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Solution

The fourth proportional to 20,590.54, 28,419.15 and 11,638.42 is: 16,063.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590.54 : 28,419.15 = 11,638.42 : x
  2. Step 2: Convert to fraction form
    20,590.54/28,419.15 = 11,638.42/x
  3. Step 3: Cross multiply
    20,590.54x = 28,419.15 × 11,638.42
  4. Step 4: Simplify right side
    20,590.54x = 330,754,003.74
  5. Step 5: Solve for x
    x = 330,754,003.74/20,590.54
  6. Step 6: Final answer
    x = 16,063.40

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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.