Home / 19,914,921-29,897,595.18-12,219,661.80

Finding the Fourth Proportional to 19,914,921, 29,897,595.18 and 12,219,661.80

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Solution

The fourth proportional to 19,914,921, 29,897,595.18 and 12,219,661.80 is: 18,344,963.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,914,921 : 29,897,595.18 = 12,219,661.80 : x
  2. Step 2: Convert to fraction form
    19,914,921/29,897,595.18 = 12,219,661.80/x
  3. Step 3: Cross multiply
    19,914,921x = 29,897,595.18 × 12,219,661.80
  4. Step 4: Simplify right side
    19,914,921x = 365,338,501,732,910.12
  5. Step 5: Solve for x
    x = 365,338,501,732,910.12/19,914,921
  6. Step 6: Final answer
    x = 18,344,963.64

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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.