Home / 20,873.25-28,805.15-11,313.29

Finding the Fourth Proportional to 20,873.25, 28,805.15 and 11,313.29

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Solution

The fourth proportional to 20,873.25, 28,805.15 and 11,313.29 is: 15,612.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873.25 : 28,805.15 = 11,313.29 : x
  2. Step 2: Convert to fraction form
    20,873.25/28,805.15 = 11,313.29/x
  3. Step 3: Cross multiply
    20,873.25x = 28,805.15 × 11,313.29
  4. Step 4: Simplify right side
    20,873.25x = 325,881,115.74
  5. Step 5: Solve for x
    x = 325,881,115.74/20,873.25
  6. Step 6: Final answer
    x = 15,612.38

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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.