Home / 31,120.19-42,945.86-16,973.03

Finding the Fourth Proportional to 31,120.19, 42,945.86 and 16,973.03

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Solution

The fourth proportional to 31,120.19, 42,945.86 and 16,973.03 is: 23,422.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,120.19 : 42,945.86 = 16,973.03 : x
  2. Step 2: Convert to fraction form
    31,120.19/42,945.86 = 16,973.03/x
  3. Step 3: Cross multiply
    31,120.19x = 42,945.86 × 16,973.03
  4. Step 4: Simplify right side
    31,120.19x = 728,921,370.16
  5. Step 5: Solve for x
    x = 728,921,370.16/31,120.19
  6. Step 6: Final answer
    x = 23,422.78

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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.