Home / 20,796,423.40-31,152,644.70-11,810,477.80

Finding the Fourth Proportional to 20,796,423.40, 31,152,644.70 and 11,810,477.80

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Solution

The fourth proportional to 20,796,423.40, 31,152,644.70 and 11,810,477.80 is: 17,691,869.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796,423.40 : 31,152,644.70 = 11,810,477.80 : x
  2. Step 2: Convert to fraction form
    20,796,423.40/31,152,644.70 = 11,810,477.80/x
  3. Step 3: Cross multiply
    20,796,423.40x = 31,152,644.70 × 11,810,477.80
  4. Step 4: Simplify right side
    20,796,423.40x = 367,927,618,640,637.69
  5. Step 5: Solve for x
    x = 367,927,618,640,637.69/20,796,423.40
  6. Step 6: Final answer
    x = 17,691,869.97

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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.