Home / 21,987,977.34-30,346,099.63-12,695,531.81

Finding the Fourth Proportional to 21,987,977.34, 30,346,099.63 and 12,695,531.81

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Solution

The fourth proportional to 21,987,977.34, 30,346,099.63 and 12,695,531.81 is: 17,521,387.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,987,977.34 : 30,346,099.63 = 12,695,531.81 : x
  2. Step 2: Convert to fraction form
    21,987,977.34/30,346,099.63 = 12,695,531.81/x
  3. Step 3: Cross multiply
    21,987,977.34x = 30,346,099.63 × 12,695,531.81
  4. Step 4: Simplify right side
    21,987,977.34x = 385,259,873,185,021.56
  5. Step 5: Solve for x
    x = 385,259,873,185,021.56/21,987,977.34
  6. Step 6: Final answer
    x = 17,521,387.59

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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.