Home / 12,161,861.78-16,783,370.58-6,655,237.80

Finding the Fourth Proportional to 12,161,861.78, 16,783,370.58 and 6,655,237.80

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Solution

The fourth proportional to 12,161,861.78, 16,783,370.58 and 6,655,237.80 is: 9,184,228.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161,861.78 : 16,783,370.58 = 6,655,237.80 : x
  2. Step 2: Convert to fraction form
    12,161,861.78/16,783,370.58 = 6,655,237.80/x
  3. Step 3: Cross multiply
    12,161,861.78x = 16,783,370.58 × 6,655,237.80
  4. Step 4: Simplify right side
    12,161,861.78x = 111,697,322,295,423.91
  5. Step 5: Solve for x
    x = 111,697,322,295,423.91/12,161,861.78
  6. Step 6: Final answer
    x = 9,184,228.89

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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.