Home / 30,725.12-42,401.68-18,793.76

Finding the Fourth Proportional to 30,725.12, 42,401.68 and 18,793.76

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Solution

The fourth proportional to 30,725.12, 42,401.68 and 18,793.76 is: 25,936.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,725.12 : 42,401.68 = 18,793.76 : x
  2. Step 2: Convert to fraction form
    30,725.12/42,401.68 = 18,793.76/x
  3. Step 3: Cross multiply
    30,725.12x = 42,401.68 × 18,793.76
  4. Step 4: Simplify right side
    30,725.12x = 796,886,997.52
  5. Step 5: Solve for x
    x = 796,886,997.52/30,725.12
  6. Step 6: Final answer
    x = 25,936.01

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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.