Home / 31,005.30-42,786.14-16,858.16

Finding the Fourth Proportional to 31,005.30, 42,786.14 and 16,858.16

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Solution

The fourth proportional to 31,005.30, 42,786.14 and 16,858.16 is: 23,263.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,005.30 : 42,786.14 = 16,858.16 : x
  2. Step 2: Convert to fraction form
    31,005.30/42,786.14 = 16,858.16/x
  3. Step 3: Cross multiply
    31,005.30x = 42,786.14 × 16,858.16
  4. Step 4: Simplify right side
    31,005.30x = 721,295,295.68
  5. Step 5: Solve for x
    x = 721,295,295.68/31,005.30
  6. Step 6: Final answer
    x = 23,263.61

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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.