Home / 20,563.78-28,377.93-11,613.22

Finding the Fourth Proportional to 20,563.78, 28,377.93 and 11,613.22

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Solution

The fourth proportional to 20,563.78, 28,377.93 and 11,613.22 is: 16,026.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563.78 : 28,377.93 = 11,613.22 : x
  2. Step 2: Convert to fraction form
    20,563.78/28,377.93 = 11,613.22/x
  3. Step 3: Cross multiply
    20,563.78x = 28,377.93 × 11,613.22
  4. Step 4: Simplify right side
    20,563.78x = 329,559,144.23
  5. Step 5: Solve for x
    x = 329,559,144.23/20,563.78
  6. Step 6: Final answer
    x = 16,026.19

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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.