Home / 15,817.56-21,831.57-13,162.38

Finding the Fourth Proportional to 15,817.56, 21,831.57 and 13,162.38

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Solution

The fourth proportional to 15,817.56, 21,831.57 and 13,162.38 is: 18,166.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,817.56 : 21,831.57 = 13,162.38 : x
  2. Step 2: Convert to fraction form
    15,817.56/21,831.57 = 13,162.38/x
  3. Step 3: Cross multiply
    15,817.56x = 21,831.57 × 13,162.38
  4. Step 4: Simplify right side
    15,817.56x = 287,355,420.34
  5. Step 5: Solve for x
    x = 287,355,420.34/15,817.56
  6. Step 6: Final answer
    x = 18,166.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.