Home / 20,699.28-28,564.22-11,746.25

Finding the Fourth Proportional to 20,699.28, 28,564.22 and 11,746.25

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Solution

The fourth proportional to 20,699.28, 28,564.22 and 11,746.25 is: 16,209.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.28 : 28,564.22 = 11,746.25 : x
  2. Step 2: Convert to fraction form
    20,699.28/28,564.22 = 11,746.25/x
  3. Step 3: Cross multiply
    20,699.28x = 28,564.22 × 11,746.25
  4. Step 4: Simplify right side
    20,699.28x = 335,522,267.62
  5. Step 5: Solve for x
    x = 335,522,267.62/20,699.28
  6. Step 6: Final answer
    x = 16,209.37

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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.