Home / 21,316,615.80-31,932,933.30-19,804,961.40

Finding the Fourth Proportional to 21,316,615.80, 31,932,933.30 and 19,804,961.40

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Solution

The fourth proportional to 21,316,615.80, 31,932,933.30 and 19,804,961.40 is: 29,668,429.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316,615.80 : 31,932,933.30 = 19,804,961.40 : x
  2. Step 2: Convert to fraction form
    21,316,615.80/31,932,933.30 = 19,804,961.40/x
  3. Step 3: Cross multiply
    21,316,615.80x = 31,932,933.30 × 19,804,961.40
  4. Step 4: Simplify right side
    21,316,615.80x = 632,430,511,395,274.62
  5. Step 5: Solve for x
    x = 632,430,511,395,274.62/21,316,615.80
  6. Step 6: Final answer
    x = 29,668,429.42

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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.