Home / 31,831.11-47,705.15-17,790.57

Finding the Fourth Proportional to 31,831.11, 47,705.15 and 17,790.57

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Solution

The fourth proportional to 31,831.11, 47,705.15 and 17,790.57 is: 26,662.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,831.11 : 47,705.15 = 17,790.57 : x
  2. Step 2: Convert to fraction form
    31,831.11/47,705.15 = 17,790.57/x
  3. Step 3: Cross multiply
    31,831.11x = 47,705.15 × 17,790.57
  4. Step 4: Simplify right side
    31,831.11x = 848,701,482.96
  5. Step 5: Solve for x
    x = 848,701,482.96/31,831.11
  6. Step 6: Final answer
    x = 26,662.65

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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.