Home / 21,987,742.70-30,330,478.31-13,713,439.79

Finding the Fourth Proportional to 21,987,742.70, 30,330,478.31 and 13,713,439.79

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Solution

The fourth proportional to 21,987,742.70, 30,330,478.31 and 13,713,439.79 is: 18,916,684.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,987,742.70 : 30,330,478.31 = 13,713,439.79 : x
  2. Step 2: Convert to fraction form
    21,987,742.70/30,330,478.31 = 13,713,439.79/x
  3. Step 3: Cross multiply
    21,987,742.70x = 30,330,478.31 × 13,713,439.79
  4. Step 4: Simplify right side
    21,987,742.70x = 415,935,188,190,483.06
  5. Step 5: Solve for x
    x = 415,935,188,190,483.06/21,987,742.70
  6. Step 6: Final answer
    x = 18,916,684.35

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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.