Home / 20,788.56-28,629.90-19,454.49

Finding the Fourth Proportional to 20,788.56, 28,629.90 and 19,454.49

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Solution

The fourth proportional to 20,788.56, 28,629.90 and 19,454.49 is: 26,792.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788.56 : 28,629.90 = 19,454.49 : x
  2. Step 2: Convert to fraction form
    20,788.56/28,629.90 = 19,454.49/x
  3. Step 3: Cross multiply
    20,788.56x = 28,629.90 × 19,454.49
  4. Step 4: Simplify right side
    20,788.56x = 556,980,103.25
  5. Step 5: Solve for x
    x = 556,980,103.25/20,788.56
  6. Step 6: Final answer
    x = 26,792.63

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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.