Home / 21,276.39-31,936.29-17,566.79

Finding the Fourth Proportional to 21,276.39, 31,936.29 and 17,566.79

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Solution

The fourth proportional to 21,276.39, 31,936.29 and 17,566.79 is: 26,368.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276.39 : 31,936.29 = 17,566.79 : x
  2. Step 2: Convert to fraction form
    21,276.39/31,936.29 = 17,566.79/x
  3. Step 3: Cross multiply
    21,276.39x = 31,936.29 × 17,566.79
  4. Step 4: Simplify right side
    21,276.39x = 561,018,099.81
  5. Step 5: Solve for x
    x = 561,018,099.81/21,276.39
  6. Step 6: Final answer
    x = 26,368.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.