Home / 31,866.77-43,981.58-18,446.20

Finding the Fourth Proportional to 31,866.77, 43,981.58 and 18,446.20

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Solution

The fourth proportional to 31,866.77, 43,981.58 and 18,446.20 is: 25,458.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,866.77 : 43,981.58 = 18,446.20 : x
  2. Step 2: Convert to fraction form
    31,866.77/43,981.58 = 18,446.20/x
  3. Step 3: Cross multiply
    31,866.77x = 43,981.58 × 18,446.20
  4. Step 4: Simplify right side
    31,866.77x = 811,293,021.00
  5. Step 5: Solve for x
    x = 811,293,021.00/31,866.77
  6. Step 6: Final answer
    x = 25,458.90

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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.