Home / 31,809.69-43,894.11-18,385.26

Finding the Fourth Proportional to 31,809.69, 43,894.11 and 18,385.26

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Solution

The fourth proportional to 31,809.69, 43,894.11 and 18,385.26 is: 25,369.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,809.69 : 43,894.11 = 18,385.26 : x
  2. Step 2: Convert to fraction form
    31,809.69/43,894.11 = 18,385.26/x
  3. Step 3: Cross multiply
    31,809.69x = 43,894.11 × 18,385.26
  4. Step 4: Simplify right side
    31,809.69x = 807,004,624.82
  5. Step 5: Solve for x
    x = 807,004,624.82/31,809.69
  6. Step 6: Final answer
    x = 25,369.77

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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.