Home / 20,960,429.70-31,421,945.70-8,177,961.45

Finding the Fourth Proportional to 20,960,429.70, 31,421,945.70 and 8,177,961.45

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Solution

The fourth proportional to 20,960,429.70, 31,421,945.70 and 8,177,961.45 is: 12,259,646.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960,429.70 : 31,421,945.70 = 8,177,961.45 : x
  2. Step 2: Convert to fraction form
    20,960,429.70/31,421,945.70 = 8,177,961.45/x
  3. Step 3: Cross multiply
    20,960,429.70x = 31,421,945.70 × 8,177,961.45
  4. Step 4: Simplify right side
    20,960,429.70x = 256,967,460,618,593.25
  5. Step 5: Solve for x
    x = 256,967,460,618,593.25/20,960,429.70
  6. Step 6: Final answer
    x = 12,259,646.60

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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.