Home / 21,185.53-31,742.42-14,064.81

Finding the Fourth Proportional to 21,185.53, 31,742.42 and 14,064.81

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Solution

The fourth proportional to 21,185.53, 31,742.42 and 14,064.81 is: 21,073.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.53 : 31,742.42 = 14,064.81 : x
  2. Step 2: Convert to fraction form
    21,185.53/31,742.42 = 14,064.81/x
  3. Step 3: Cross multiply
    21,185.53x = 31,742.42 × 14,064.81
  4. Step 4: Simplify right side
    21,185.53x = 446,450,916.88
  5. Step 5: Solve for x
    x = 446,450,916.88/21,185.53
  6. Step 6: Final answer
    x = 21,073.39

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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.