Home / 20,723,619.80-31,085,429.70-13,165,347.80

Finding the Fourth Proportional to 20,723,619.80, 31,085,429.70 and 13,165,347.80

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Solution

The fourth proportional to 20,723,619.80, 31,085,429.70 and 13,165,347.80 is: 19,748,021.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723,619.80 : 31,085,429.70 = 13,165,347.80 : x
  2. Step 2: Convert to fraction form
    20,723,619.80/31,085,429.70 = 13,165,347.80/x
  3. Step 3: Cross multiply
    20,723,619.80x = 31,085,429.70 × 13,165,347.80
  4. Step 4: Simplify right side
    20,723,619.80x = 409,250,493,512,949.69
  5. Step 5: Solve for x
    x = 409,250,493,512,949.69/20,723,619.80
  6. Step 6: Final answer
    x = 19,748,021.70

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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.