Home / 31,248,218.69-43,137,494.99-20,811,603.18

Finding the Fourth Proportional to 31,248,218.69, 43,137,494.99 and 20,811,603.18

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Solution

The fourth proportional to 31,248,218.69, 43,137,494.99 and 20,811,603.18 is: 28,729,971.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,248,218.69 : 43,137,494.99 = 20,811,603.18 : x
  2. Step 2: Convert to fraction form
    31,248,218.69/43,137,494.99 = 20,811,603.18/x
  3. Step 3: Cross multiply
    31,248,218.69x = 43,137,494.99 × 20,811,603.18
  4. Step 4: Simplify right side
    31,248,218.69x = 897,760,427,807,060
  5. Step 5: Solve for x
    x = 897,760,427,807,060/31,248,218.69
  6. Step 6: Final answer
    x = 28,729,971.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.