Home / 31,120.32-42,947.04-16,973.76

Finding the Fourth Proportional to 31,120.32, 42,947.04 and 16,973.76

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Solution

The fourth proportional to 31,120.32, 42,947.04 and 16,973.76 is: 23,424.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,120.32 : 42,947.04 = 16,973.76 : x
  2. Step 2: Convert to fraction form
    31,120.32/42,947.04 = 16,973.76/x
  3. Step 3: Cross multiply
    31,120.32x = 42,947.04 × 16,973.76
  4. Step 4: Simplify right side
    31,120.32x = 728,972,749.67
  5. Step 5: Solve for x
    x = 728,972,749.67/31,120.32
  6. Step 6: Final answer
    x = 23,424.33

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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.