Home / 12,168,096.90-18,252,145.35-7,381,191.30

Finding the Fourth Proportional to 12,168,096.90, 18,252,145.35 and 7,381,191.30

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Solution

The fourth proportional to 12,168,096.90, 18,252,145.35 and 7,381,191.30 is: 11,071,786.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,168,096.90 : 18,252,145.35 = 7,381,191.30 : x
  2. Step 2: Convert to fraction form
    12,168,096.90/18,252,145.35 = 7,381,191.30/x
  3. Step 3: Cross multiply
    12,168,096.90x = 18,252,145.35 × 7,381,191.30
  4. Step 4: Simplify right side
    12,168,096.90x = 134,722,576,463,755.47
  5. Step 5: Solve for x
    x = 134,722,576,463,755.47/12,168,096.90
  6. Step 6: Final answer
    x = 11,071,786.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.