Home / 12,139,419.80-18,209,129.70-8,313,044.60

Finding the Fourth Proportional to 12,139,419.80, 18,209,129.70 and 8,313,044.60

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Solution

The fourth proportional to 12,139,419.80, 18,209,129.70 and 8,313,044.60 is: 12,469,566.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139,419.80 : 18,209,129.70 = 8,313,044.60 : x
  2. Step 2: Convert to fraction form
    12,139,419.80/18,209,129.70 = 8,313,044.60/x
  3. Step 3: Cross multiply
    12,139,419.80x = 18,209,129.70 × 8,313,044.60
  4. Step 4: Simplify right side
    12,139,419.80x = 151,373,307,323,284.59
  5. Step 5: Solve for x
    x = 151,373,307,323,284.59/12,139,419.80
  6. Step 6: Final answer
    x = 12,469,566.90

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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.