Home / 12,298,913.40-18,448,370.10-7,830,996.60

Finding the Fourth Proportional to 12,298,913.40, 18,448,370.10 and 7,830,996.60

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Solution

The fourth proportional to 12,298,913.40, 18,448,370.10 and 7,830,996.60 is: 11,746,494.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,298,913.40 : 18,448,370.10 = 7,830,996.60 : x
  2. Step 2: Convert to fraction form
    12,298,913.40/18,448,370.10 = 7,830,996.60/x
  3. Step 3: Cross multiply
    12,298,913.40x = 18,448,370.10 × 7,830,996.60
  4. Step 4: Simplify right side
    12,298,913.40x = 144,469,123,528,641.66
  5. Step 5: Solve for x
    x = 144,469,123,528,641.66/12,298,913.40
  6. Step 6: Final answer
    x = 11,746,494.90

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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.