Home / 12,111,135.40-18,146,138.10-7,308,733.60

Finding the Fourth Proportional to 12,111,135.40, 18,146,138.10 and 7,308,733.60

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Solution

The fourth proportional to 12,111,135.40, 18,146,138.10 and 7,308,733.60 is: 10,950,689.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,111,135.40 : 18,146,138.10 = 7,308,733.60 : x
  2. Step 2: Convert to fraction form
    12,111,135.40/18,146,138.10 = 7,308,733.60/x
  3. Step 3: Cross multiply
    12,111,135.40x = 18,146,138.10 × 7,308,733.60
  4. Step 4: Simplify right side
    12,111,135.40x = 132,625,289,241,710.17
  5. Step 5: Solve for x
    x = 132,625,289,241,710.17/12,111,135.40
  6. Step 6: Final answer
    x = 10,950,689.99

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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.