Home / 21,009.96-28,993.36-11,449.93

Finding the Fourth Proportional to 21,009.96, 28,993.36 and 11,449.93

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Solution

The fourth proportional to 21,009.96, 28,993.36 and 11,449.93 is: 15,800.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,009.96 : 28,993.36 = 11,449.93 : x
  2. Step 2: Convert to fraction form
    21,009.96/28,993.36 = 11,449.93/x
  3. Step 3: Cross multiply
    21,009.96x = 28,993.36 × 11,449.93
  4. Step 4: Simplify right side
    21,009.96x = 331,971,869.98
  5. Step 5: Solve for x
    x = 331,971,869.98/21,009.96
  6. Step 6: Final answer
    x = 15,800.69

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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.