Home / 20,506.85-28,327.97-19,442.51

Finding the Fourth Proportional to 20,506.85, 28,327.97 and 19,442.51

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Solution

The fourth proportional to 20,506.85, 28,327.97 and 19,442.51 is: 26,857.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.85 : 28,327.97 = 19,442.51 : x
  2. Step 2: Convert to fraction form
    20,506.85/28,327.97 = 19,442.51/x
  3. Step 3: Cross multiply
    20,506.85x = 28,327.97 × 19,442.51
  4. Step 4: Simplify right side
    20,506.85x = 550,766,742.79
  5. Step 5: Solve for x
    x = 550,766,742.79/20,506.85
  6. Step 6: Final answer
    x = 26,857.70

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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.