Home / 12,120,431.31-18,180,667.62-9,706,934.66

Finding the Fourth Proportional to 12,120,431.31, 18,180,667.62 and 9,706,934.66

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Solution

The fourth proportional to 12,120,431.31, 18,180,667.62 and 9,706,934.66 is: 14,560,418.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120,431.31 : 18,180,667.62 = 9,706,934.66 : x
  2. Step 2: Convert to fraction form
    12,120,431.31/18,180,667.62 = 9,706,934.66/x
  3. Step 3: Cross multiply
    12,120,431.31x = 18,180,667.62 × 9,706,934.66
  4. Step 4: Simplify right side
    12,120,431.31x = 176,478,552,571,614.38
  5. Step 5: Solve for x
    x = 176,478,552,571,614.38/12,120,431.31
  6. Step 6: Final answer
    x = 14,560,418.52

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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.