Home / 20,349.09-28,081.35-11,273.58

Finding the Fourth Proportional to 20,349.09, 28,081.35 and 11,273.58

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Solution

The fourth proportional to 20,349.09, 28,081.35 and 11,273.58 is: 15,557.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.09 : 28,081.35 = 11,273.58 : x
  2. Step 2: Convert to fraction form
    20,349.09/28,081.35 = 11,273.58/x
  3. Step 3: Cross multiply
    20,349.09x = 28,081.35 × 11,273.58
  4. Step 4: Simplify right side
    20,349.09x = 316,577,345.73
  5. Step 5: Solve for x
    x = 316,577,345.73/20,349.09
  6. Step 6: Final answer
    x = 15,557.32

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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.