Home / 20,873.34-28,805.56-11,313.53

Finding the Fourth Proportional to 20,873.34, 28,805.56 and 11,313.53

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Solution

The fourth proportional to 20,873.34, 28,805.56 and 11,313.53 is: 15,612.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873.34 : 28,805.56 = 11,313.53 : x
  2. Step 2: Convert to fraction form
    20,873.34/28,805.56 = 11,313.53/x
  3. Step 3: Cross multiply
    20,873.34x = 28,805.56 × 11,313.53
  4. Step 4: Simplify right side
    20,873.34x = 325,892,567.23
  5. Step 5: Solve for x
    x = 325,892,567.23/20,873.34
  6. Step 6: Final answer
    x = 15,612.86

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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.