Home / 20,613.03-28,445.93-11,181.59

Finding the Fourth Proportional to 20,613.03, 28,445.93 and 11,181.59

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Solution

The fourth proportional to 20,613.03, 28,445.93 and 11,181.59 is: 15,430.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,613.03 : 28,445.93 = 11,181.59 : x
  2. Step 2: Convert to fraction form
    20,613.03/28,445.93 = 11,181.59/x
  3. Step 3: Cross multiply
    20,613.03x = 28,445.93 × 11,181.59
  4. Step 4: Simplify right side
    20,613.03x = 318,070,634.96
  5. Step 5: Solve for x
    x = 318,070,634.96/20,613.03
  6. Step 6: Final answer
    x = 15,430.56

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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.