Home / 13,320,288.80-18,381,998.37-7,208,717.30

Finding the Fourth Proportional to 13,320,288.80, 18,381,998.37 and 7,208,717.30

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Solution

The fourth proportional to 13,320,288.80, 18,381,998.37 and 7,208,717.30 is: 9,948,029.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320,288.80 : 18,381,998.37 = 7,208,717.30 : x
  2. Step 2: Convert to fraction form
    13,320,288.80/18,381,998.37 = 7,208,717.30/x
  3. Step 3: Cross multiply
    13,320,288.80x = 18,381,998.37 × 7,208,717.30
  4. Step 4: Simplify right side
    13,320,288.80x = 132,510,629,658,390.81
  5. Step 5: Solve for x
    x = 132,510,629,658,390.81/13,320,288.80
  6. Step 6: Final answer
    x = 9,948,029.78

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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.