Home / 30,869.12-42,682.20-29,450

Finding the Fourth Proportional to 30,869.12, 42,682.20 and 29,450

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Solution

The fourth proportional to 30,869.12, 42,682.20 and 29,450 is: 40,720.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,869.12 : 42,682.20 = 29,450 : x
  2. Step 2: Convert to fraction form
    30,869.12/42,682.20 = 29,450/x
  3. Step 3: Cross multiply
    30,869.12x = 42,682.20 × 29,450
  4. Step 4: Simplify right side
    30,869.12x = 1,256,990,790
  5. Step 5: Solve for x
    x = 1,256,990,790/30,869.12
  6. Step 6: Final answer
    x = 40,720.01

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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.