Home / 13,320,288.55-18,381,998.03-7,208,717.05

Finding the Fourth Proportional to 13,320,288.55, 18,381,998.03 and 7,208,717.05

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Solution

The fourth proportional to 13,320,288.55, 18,381,998.03 and 7,208,717.05 is: 9,948,029.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320,288.55 : 18,381,998.03 = 7,208,717.05 : x
  2. Step 2: Convert to fraction form
    13,320,288.55/18,381,998.03 = 7,208,717.05/x
  3. Step 3: Cross multiply
    13,320,288.55x = 18,381,998.03 × 7,208,717.05
  4. Step 4: Simplify right side
    13,320,288.55x = 132,510,622,611,927.42
  5. Step 5: Solve for x
    x = 132,510,622,611,927.42/13,320,288.55
  6. Step 6: Final answer
    x = 9,948,029.44

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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.