Home / 21,360.88-29,475.24-11,929.84

Finding the Fourth Proportional to 21,360.88, 29,475.24 and 11,929.84

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Solution

The fourth proportional to 21,360.88, 29,475.24 and 11,929.84 is: 16,461.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,360.88 : 29,475.24 = 11,929.84 : x
  2. Step 2: Convert to fraction form
    21,360.88/29,475.24 = 11,929.84/x
  3. Step 3: Cross multiply
    21,360.88x = 29,475.24 × 11,929.84
  4. Step 4: Simplify right side
    21,360.88x = 351,634,897.16
  5. Step 5: Solve for x
    x = 351,634,897.16/21,360.88
  6. Step 6: Final answer
    x = 16,461.63

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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.