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Finding the Fourth Proportional to 21,495.51, 29,664.02 and 11,935.59

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Solution

The fourth proportional to 21,495.51, 29,664.02 and 11,935.59 is: 16,471.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,495.51 : 29,664.02 = 11,935.59 : x
  2. Step 2: Convert to fraction form
    21,495.51/29,664.02 = 11,935.59/x
  3. Step 3: Cross multiply
    21,495.51x = 29,664.02 × 11,935.59
  4. Step 4: Simplify right side
    21,495.51x = 354,057,499.07
  5. Step 5: Solve for x
    x = 354,057,499.07/21,495.51
  6. Step 6: Final answer
    x = 16,471.23

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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.