Home / 30,881.92-42,617.16-16,734.72

Finding the Fourth Proportional to 30,881.92, 42,617.16 and 16,734.72

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Solution

The fourth proportional to 30,881.92, 42,617.16 and 16,734.72 is: 23,093.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,881.92 : 42,617.16 = 16,734.72 : x
  2. Step 2: Convert to fraction form
    30,881.92/42,617.16 = 16,734.72/x
  3. Step 3: Cross multiply
    30,881.92x = 42,617.16 × 16,734.72
  4. Step 4: Simplify right side
    30,881.92x = 713,186,239.80
  5. Step 5: Solve for x
    x = 713,186,239.80/30,881.92
  6. Step 6: Final answer
    x = 23,093.97

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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.