Home / 19,411.10-29,138.55-12,850.10

Finding the Fourth Proportional to 19,411.10, 29,138.55 and 12,850.10

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Solution

The fourth proportional to 19,411.10, 29,138.55 and 12,850.10 is: 19,289.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,411.10 : 29,138.55 = 12,850.10 : x
  2. Step 2: Convert to fraction form
    19,411.10/29,138.55 = 12,850.10/x
  3. Step 3: Cross multiply
    19,411.10x = 29,138.55 × 12,850.10
  4. Step 4: Simplify right side
    19,411.10x = 374,433,281.36
  5. Step 5: Solve for x
    x = 374,433,281.36/19,411.10
  6. Step 6: Final answer
    x = 19,289.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.