Home / 21,051.66-31,566.51-18,653.43

Finding the Fourth Proportional to 21,051.66, 31,566.51 and 18,653.43

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Solution

The fourth proportional to 21,051.66, 31,566.51 and 18,653.43 is: 27,970.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,051.66 : 31,566.51 = 18,653.43 : x
  2. Step 2: Convert to fraction form
    21,051.66/31,566.51 = 18,653.43/x
  3. Step 3: Cross multiply
    21,051.66x = 31,566.51 × 18,653.43
  4. Step 4: Simplify right side
    21,051.66x = 588,823,684.63
  5. Step 5: Solve for x
    x = 588,823,684.63/21,051.66
  6. Step 6: Final answer
    x = 27,970.42

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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.