Home / 21,761,929.40-30,031,462.35-11,972,163.47

Finding the Fourth Proportional to 21,761,929.40, 30,031,462.35 and 11,972,163.47

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Solution

The fourth proportional to 21,761,929.40, 30,031,462.35 and 11,972,163.47 is: 16,521,585.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,761,929.40 : 30,031,462.35 = 11,972,163.47 : x
  2. Step 2: Convert to fraction form
    21,761,929.40/30,031,462.35 = 11,972,163.47/x
  3. Step 3: Cross multiply
    21,761,929.40x = 30,031,462.35 × 11,972,163.47
  4. Step 4: Simplify right side
    21,761,929.40x = 359,541,576,347,193.06
  5. Step 5: Solve for x
    x = 359,541,576,347,193.06/21,761,929.40
  6. Step 6: Final answer
    x = 16,521,585.46

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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.