Home / 21,042.47-29,038.46-11,967.82

Finding the Fourth Proportional to 21,042.47, 29,038.46 and 11,967.82

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Solution

The fourth proportional to 21,042.47, 29,038.46 and 11,967.82 is: 16,515.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.47 : 29,038.46 = 11,967.82 : x
  2. Step 2: Convert to fraction form
    21,042.47/29,038.46 = 11,967.82/x
  3. Step 3: Cross multiply
    21,042.47x = 29,038.46 × 11,967.82
  4. Step 4: Simplify right side
    21,042.47x = 347,526,929.92
  5. Step 5: Solve for x
    x = 347,526,929.92/21,042.47
  6. Step 6: Final answer
    x = 16,515.50

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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.