Home / 21,239,013.98-31,845,707.17-8,109,289.22

Finding the Fourth Proportional to 21,239,013.98, 31,845,707.17 and 8,109,289.22

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Solution

The fourth proportional to 21,239,013.98, 31,845,707.17 and 8,109,289.22 is: 12,159,041.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,239,013.98 : 31,845,707.17 = 8,109,289.22 : x
  2. Step 2: Convert to fraction form
    21,239,013.98/31,845,707.17 = 8,109,289.22/x
  3. Step 3: Cross multiply
    21,239,013.98x = 31,845,707.17 × 8,109,289.22
  4. Step 4: Simplify right side
    21,239,013.98x = 258,246,049,677,455.94
  5. Step 5: Solve for x
    x = 258,246,049,677,455.94/21,239,013.98
  6. Step 6: Final answer
    x = 12,159,041.37

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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.