Home / 20,892.35-28,829.73-11,460.92

Finding the Fourth Proportional to 20,892.35, 28,829.73 and 11,460.92

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Solution

The fourth proportional to 20,892.35, 28,829.73 and 11,460.92 is: 15,815.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,892.35 : 28,829.73 = 11,460.92 : x
  2. Step 2: Convert to fraction form
    20,892.35/28,829.73 = 11,460.92/x
  3. Step 3: Cross multiply
    20,892.35x = 28,829.73 × 11,460.92
  4. Step 4: Simplify right side
    20,892.35x = 330,415,027.70
  5. Step 5: Solve for x
    x = 330,415,027.70/20,892.35
  6. Step 6: Final answer
    x = 15,815.12

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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.