Home / 20,845.68-28,747.08-19,318.56

Finding the Fourth Proportional to 20,845.68, 28,747.08 and 19,318.56

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Solution

The fourth proportional to 20,845.68, 28,747.08 and 19,318.56 is: 26,641.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.68 : 28,747.08 = 19,318.56 : x
  2. Step 2: Convert to fraction form
    20,845.68/28,747.08 = 19,318.56/x
  3. Step 3: Cross multiply
    20,845.68x = 28,747.08 × 19,318.56
  4. Step 4: Simplify right side
    20,845.68x = 555,352,189.80
  5. Step 5: Solve for x
    x = 555,352,189.80/20,845.68
  6. Step 6: Final answer
    x = 26,641.12

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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.