Home / 12,191,756.96-18,291,700.74-8,109,172.97

Finding the Fourth Proportional to 12,191,756.96, 18,291,700.74 and 8,109,172.97

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Solution

The fourth proportional to 12,191,756.96, 18,291,700.74 and 8,109,172.97 is: 12,166,463.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,191,756.96 : 18,291,700.74 = 8,109,172.97 : x
  2. Step 2: Convert to fraction form
    12,191,756.96/18,291,700.74 = 8,109,172.97/x
  3. Step 3: Cross multiply
    12,191,756.96x = 18,291,700.74 × 8,109,172.97
  4. Step 4: Simplify right side
    12,191,756.96x = 148,330,565,200,878.78
  5. Step 5: Solve for x
    x = 148,330,565,200,878.78/12,191,756.96
  6. Step 6: Final answer
    x = 12,166,463.43

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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.