Home / 21,012.68-28,997.12-11,452.66

Finding the Fourth Proportional to 21,012.68, 28,997.12 and 11,452.66

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Solution

The fourth proportional to 21,012.68, 28,997.12 and 11,452.66 is: 15,804.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012.68 : 28,997.12 = 11,452.66 : x
  2. Step 2: Convert to fraction form
    21,012.68/28,997.12 = 11,452.66/x
  3. Step 3: Cross multiply
    21,012.68x = 28,997.12 × 11,452.66
  4. Step 4: Simplify right side
    21,012.68x = 332,094,156.34
  5. Step 5: Solve for x
    x = 332,094,156.34/21,012.68
  6. Step 6: Final answer
    x = 15,804.46

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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.