Home / 21,212,969.92-31,841,719.14-18,799,563.48

Finding the Fourth Proportional to 21,212,969.92, 31,841,719.14 and 18,799,563.48

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Solution

The fourth proportional to 21,212,969.92, 31,841,719.14 and 18,799,563.48 is: 28,219,076.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212,969.92 : 31,841,719.14 = 18,799,563.48 : x
  2. Step 2: Convert to fraction form
    21,212,969.92/31,841,719.14 = 18,799,563.48/x
  3. Step 3: Cross multiply
    21,212,969.92x = 31,841,719.14 × 18,799,563.48
  4. Step 4: Simplify right side
    21,212,969.92x = 598,610,420,235,853
  5. Step 5: Solve for x
    x = 598,610,420,235,853/21,212,969.92
  6. Step 6: Final answer
    x = 28,219,076.47

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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.