Home / 21,003.68-28,982.40-12,051.56

Finding the Fourth Proportional to 21,003.68, 28,982.40 and 12,051.56

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Solution

The fourth proportional to 21,003.68, 28,982.40 and 12,051.56 is: 16,629.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,003.68 : 28,982.40 = 12,051.56 : x
  2. Step 2: Convert to fraction form
    21,003.68/28,982.40 = 12,051.56/x
  3. Step 3: Cross multiply
    21,003.68x = 28,982.40 × 12,051.56
  4. Step 4: Simplify right side
    21,003.68x = 349,283,132.54
  5. Step 5: Solve for x
    x = 349,283,132.54/21,003.68
  6. Step 6: Final answer
    x = 16,629.62

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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.