Home / 20,490.06-28,276.29-11,537.64

Finding the Fourth Proportional to 20,490.06, 28,276.29 and 11,537.64

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Solution

The fourth proportional to 20,490.06, 28,276.29 and 11,537.64 is: 15,921.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490.06 : 28,276.29 = 11,537.64 : x
  2. Step 2: Convert to fraction form
    20,490.06/28,276.29 = 11,537.64/x
  3. Step 3: Cross multiply
    20,490.06x = 28,276.29 × 11,537.64
  4. Step 4: Simplify right side
    20,490.06x = 326,241,654.56
  5. Step 5: Solve for x
    x = 326,241,654.56/20,490.06
  6. Step 6: Final answer
    x = 15,921.94

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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.