Home / 31,163.34-43,007.07-20,545.32

Finding the Fourth Proportional to 31,163.34, 43,007.07 and 20,545.32

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Solution

The fourth proportional to 31,163.34, 43,007.07 and 20,545.32 is: 28,353.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,163.34 : 43,007.07 = 20,545.32 : x
  2. Step 2: Convert to fraction form
    31,163.34/43,007.07 = 20,545.32/x
  3. Step 3: Cross multiply
    31,163.34x = 43,007.07 × 20,545.32
  4. Step 4: Simplify right side
    31,163.34x = 883,594,015.41
  5. Step 5: Solve for x
    x = 883,594,015.41/31,163.34
  6. Step 6: Final answer
    x = 28,353.64

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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.