Home / 12,139,423.30-18,209,134.95-8,313,048.10

Finding the Fourth Proportional to 12,139,423.30, 18,209,134.95 and 8,313,048.10

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Solution

The fourth proportional to 12,139,423.30, 18,209,134.95 and 8,313,048.10 is: 12,469,572.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139,423.30 : 18,209,134.95 = 8,313,048.10 : x
  2. Step 2: Convert to fraction form
    12,139,423.30/18,209,134.95 = 8,313,048.10/x
  3. Step 3: Cross multiply
    12,139,423.30x = 18,209,134.95 × 8,313,048.10
  4. Step 4: Simplify right side
    12,139,423.30x = 151,373,414,698,741.09
  5. Step 5: Solve for x
    x = 151,373,414,698,741.09/12,139,423.30
  6. Step 6: Final answer
    x = 12,469,572.15

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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.