Home / 30,954.31-42,727.11-18,206.94

Finding the Fourth Proportional to 30,954.31, 42,727.11 and 18,206.94

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Solution

The fourth proportional to 30,954.31, 42,727.11 and 18,206.94 is: 25,131.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,954.31 : 42,727.11 = 18,206.94 : x
  2. Step 2: Convert to fraction form
    30,954.31/42,727.11 = 18,206.94/x
  3. Step 3: Cross multiply
    30,954.31x = 42,727.11 × 18,206.94
  4. Step 4: Simplify right side
    30,954.31x = 777,929,928.14
  5. Step 5: Solve for x
    x = 777,929,928.14/30,954.31
  6. Step 6: Final answer
    x = 25,131.55

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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.