Home / 31,340.07-43,245.78-18,588.66

Finding the Fourth Proportional to 31,340.07, 43,245.78 and 18,588.66

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Solution

The fourth proportional to 31,340.07, 43,245.78 and 18,588.66 is: 25,650.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,340.07 : 43,245.78 = 18,588.66 : x
  2. Step 2: Convert to fraction form
    31,340.07/43,245.78 = 18,588.66/x
  3. Step 3: Cross multiply
    31,340.07x = 43,245.78 × 18,588.66
  4. Step 4: Simplify right side
    31,340.07x = 803,881,100.85
  5. Step 5: Solve for x
    x = 803,881,100.85/31,340.07
  6. Step 6: Final answer
    x = 25,650.27

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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.