Home / 21,647,421.53-29,862,115.88-13,384,842.59

Finding the Fourth Proportional to 21,647,421.53, 29,862,115.88 and 13,384,842.59

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Solution

The fourth proportional to 21,647,421.53, 29,862,115.88 and 13,384,842.59 is: 18,464,079.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,647,421.53 : 29,862,115.88 = 13,384,842.59 : x
  2. Step 2: Convert to fraction form
    21,647,421.53/29,862,115.88 = 13,384,842.59/x
  3. Step 3: Cross multiply
    21,647,421.53x = 29,862,115.88 × 13,384,842.59
  4. Step 4: Simplify right side
    21,647,421.53x = 399,699,720,241,904.56
  5. Step 5: Solve for x
    x = 399,699,720,241,904.56/21,647,421.53
  6. Step 6: Final answer
    x = 18,464,079.88

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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.