Home / 20,934.23-31,427.99-13,569.51

Finding the Fourth Proportional to 20,934.23, 31,427.99 and 13,569.51

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Solution

The fourth proportional to 20,934.23, 31,427.99 and 13,569.51 is: 20,371.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.23 : 31,427.99 = 13,569.51 : x
  2. Step 2: Convert to fraction form
    20,934.23/31,427.99 = 13,569.51/x
  3. Step 3: Cross multiply
    20,934.23x = 31,427.99 × 13,569.51
  4. Step 4: Simplify right side
    20,934.23x = 426,462,424.58
  5. Step 5: Solve for x
    x = 426,462,424.58/20,934.23
  6. Step 6: Final answer
    x = 20,371.54

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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.