Home / 30,205.10-41,698.19-18,880.90

Finding the Fourth Proportional to 30,205.10, 41,698.19 and 18,880.90

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Solution

The fourth proportional to 30,205.10, 41,698.19 and 18,880.90 is: 26,065.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,205.10 : 41,698.19 = 18,880.90 : x
  2. Step 2: Convert to fraction form
    30,205.10/41,698.19 = 18,880.90/x
  3. Step 3: Cross multiply
    30,205.10x = 41,698.19 × 18,880.90
  4. Step 4: Simplify right side
    30,205.10x = 787,299,298.53
  5. Step 5: Solve for x
    x = 787,299,298.53/30,205.10
  6. Step 6: Final answer
    x = 26,065.11

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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.