Home / 21,053.66-31,569.51-18,655.43

Finding the Fourth Proportional to 21,053.66, 31,569.51 and 18,655.43

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Solution

The fourth proportional to 21,053.66, 31,569.51 and 18,655.43 is: 27,973.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,053.66 : 31,569.51 = 18,655.43 : x
  2. Step 2: Convert to fraction form
    21,053.66/31,569.51 = 18,655.43/x
  3. Step 3: Cross multiply
    21,053.66x = 31,569.51 × 18,655.43
  4. Step 4: Simplify right side
    21,053.66x = 588,942,783.94
  5. Step 5: Solve for x
    x = 588,942,783.94/21,053.66
  6. Step 6: Final answer
    x = 27,973.42

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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.