Home / 20,916.15-31,371.93-6,125.22

Finding the Fourth Proportional to 20,916.15, 31,371.93 and 6,125.22

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Solution

The fourth proportional to 20,916.15, 31,371.93 and 6,125.22 is: 9,187.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.15 : 31,371.93 = 6,125.22 : x
  2. Step 2: Convert to fraction form
    20,916.15/31,371.93 = 6,125.22/x
  3. Step 3: Cross multiply
    20,916.15x = 31,371.93 × 6,125.22
  4. Step 4: Simplify right side
    20,916.15x = 192,159,831.53
  5. Step 5: Solve for x
    x = 192,159,831.53/20,916.15
  6. Step 6: Final answer
    x = 9,187.15

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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.