Home / 30,947.72-42,707.82-16,800.92

Finding the Fourth Proportional to 30,947.72, 42,707.82 and 16,800.92

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Solution

The fourth proportional to 30,947.72, 42,707.82 and 16,800.92 is: 23,185.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,947.72 : 42,707.82 = 16,800.92 : x
  2. Step 2: Convert to fraction form
    30,947.72/42,707.82 = 16,800.92/x
  3. Step 3: Cross multiply
    30,947.72x = 42,707.82 × 16,800.92
  4. Step 4: Simplify right side
    30,947.72x = 717,530,667.19
  5. Step 5: Solve for x
    x = 717,530,667.19/30,947.72
  6. Step 6: Final answer
    x = 23,185.25

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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.