Home / 20,590.92-28,419.57-11,638.53

Finding the Fourth Proportional to 20,590.92, 28,419.57 and 11,638.53

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Solution

The fourth proportional to 20,590.92, 28,419.57 and 11,638.53 is: 16,063.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590.92 : 28,419.57 = 11,638.53 : x
  2. Step 2: Convert to fraction form
    20,590.92/28,419.57 = 11,638.53/x
  3. Step 3: Cross multiply
    20,590.92x = 28,419.57 × 11,638.53
  4. Step 4: Simplify right side
    20,590.92x = 330,762,018.03
  5. Step 5: Solve for x
    x = 330,762,018.03/20,590.92
  6. Step 6: Final answer
    x = 16,063.49

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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.