Home / 31,656.86-43,688.64-18,231.65

Finding the Fourth Proportional to 31,656.86, 43,688.64 and 18,231.65

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Solution

The fourth proportional to 31,656.86, 43,688.64 and 18,231.65 is: 25,160.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,656.86 : 43,688.64 = 18,231.65 : x
  2. Step 2: Convert to fraction form
    31,656.86/43,688.64 = 18,231.65/x
  3. Step 3: Cross multiply
    31,656.86x = 43,688.64 × 18,231.65
  4. Step 4: Simplify right side
    31,656.86x = 796,515,993.46
  5. Step 5: Solve for x
    x = 796,515,993.46/31,656.86
  6. Step 6: Final answer
    x = 25,160.93

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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.