Home / 31,004.96-42,786.63-16,857.81

Finding the Fourth Proportional to 31,004.96, 42,786.63 and 16,857.81

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Solution

The fourth proportional to 31,004.96, 42,786.63 and 16,857.81 is: 23,263.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,004.96 : 42,786.63 = 16,857.81 : x
  2. Step 2: Convert to fraction form
    31,004.96/42,786.63 = 16,857.81/x
  3. Step 3: Cross multiply
    31,004.96x = 42,786.63 × 16,857.81
  4. Step 4: Simplify right side
    31,004.96x = 721,288,879.08
  5. Step 5: Solve for x
    x = 721,288,879.08/31,004.96
  6. Step 6: Final answer
    x = 23,263.66

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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.