Home / 20,216.60-27,900.96-11,265.56

Finding the Fourth Proportional to 20,216.60, 27,900.96 and 11,265.56

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Solution

The fourth proportional to 20,216.60, 27,900.96 and 11,265.56 is: 15,547.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,216.60 : 27,900.96 = 11,265.56 : x
  2. Step 2: Convert to fraction form
    20,216.60/27,900.96 = 11,265.56/x
  3. Step 3: Cross multiply
    20,216.60x = 27,900.96 × 11,265.56
  4. Step 4: Simplify right side
    20,216.60x = 314,319,938.94
  5. Step 5: Solve for x
    x = 314,319,938.94/20,216.60
  6. Step 6: Final answer
    x = 15,547.62

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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.