Home / 21,289,975.83-31,934,960.37-5,115,927.11

Finding the Fourth Proportional to 21,289,975.83, 31,934,960.37 and 5,115,927.11

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Solution

The fourth proportional to 21,289,975.83, 31,934,960.37 and 5,115,927.11 is: 7,673,889.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289,975.83 : 31,934,960.37 = 5,115,927.11 : x
  2. Step 2: Convert to fraction form
    21,289,975.83/31,934,960.37 = 5,115,927.11/x
  3. Step 3: Cross multiply
    21,289,975.83x = 31,934,960.37 × 5,115,927.11
  4. Step 4: Simplify right side
    21,289,975.83x = 163,376,929,353,983.84
  5. Step 5: Solve for x
    x = 163,376,929,353,983.84/21,289,975.83
  6. Step 6: Final answer
    x = 7,673,889.85

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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.