Home / 30,933.84-42,667.56-19,750.80

Finding the Fourth Proportional to 30,933.84, 42,667.56 and 19,750.80

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Solution

The fourth proportional to 30,933.84, 42,667.56 and 19,750.80 is: 27,242.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,933.84 : 42,667.56 = 19,750.80 : x
  2. Step 2: Convert to fraction form
    30,933.84/42,667.56 = 19,750.80/x
  3. Step 3: Cross multiply
    30,933.84x = 42,667.56 × 19,750.80
  4. Step 4: Simplify right side
    30,933.84x = 842,718,444.05
  5. Step 5: Solve for x
    x = 842,718,444.05/30,933.84
  6. Step 6: Final answer
    x = 27,242.61

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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.