Home / 15,051.42-20,781.36-11,508.48

Finding the Fourth Proportional to 15,051.42, 20,781.36 and 11,508.48

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Solution

The fourth proportional to 15,051.42, 20,781.36 and 11,508.48 is: 15,889.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,051.42 : 20,781.36 = 11,508.48 : x
  2. Step 2: Convert to fraction form
    15,051.42/20,781.36 = 11,508.48/x
  3. Step 3: Cross multiply
    15,051.42x = 20,781.36 × 11,508.48
  4. Step 4: Simplify right side
    15,051.42x = 239,161,865.93
  5. Step 5: Solve for x
    x = 239,161,865.93/15,051.42
  6. Step 6: Final answer
    x = 15,889.65

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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.