Home / 21,095.76-29,112.60-11,664.72

Finding the Fourth Proportional to 21,095.76, 29,112.60 and 11,664.72

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Solution

The fourth proportional to 21,095.76, 29,112.60 and 11,664.72 is: 16,097.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,095.76 : 29,112.60 = 11,664.72 : x
  2. Step 2: Convert to fraction form
    21,095.76/29,112.60 = 11,664.72/x
  3. Step 3: Cross multiply
    21,095.76x = 29,112.60 × 11,664.72
  4. Step 4: Simplify right side
    21,095.76x = 339,590,327.47
  5. Step 5: Solve for x
    x = 339,590,327.47/21,095.76
  6. Step 6: Final answer
    x = 16,097.56

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1.5x scale

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.