Home / 21,003,939.46-28,990,829.49-13,680,023.14

Finding the Fourth Proportional to 21,003,939.46, 28,990,829.49 and 13,680,023.14

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Solution

The fourth proportional to 21,003,939.46, 28,990,829.49 and 13,680,023.14 is: 18,881,944.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,003,939.46 : 28,990,829.49 = 13,680,023.14 : x
  2. Step 2: Convert to fraction form
    21,003,939.46/28,990,829.49 = 13,680,023.14/x
  3. Step 3: Cross multiply
    21,003,939.46x = 28,990,829.49 × 13,680,023.14
  4. Step 4: Simplify right side
    21,003,939.46x = 396,595,218,270,994.38
  5. Step 5: Solve for x
    x = 396,595,218,270,994.38/21,003,939.46
  6. Step 6: Final answer
    x = 18,881,944.46

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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.