Home / 12,904.85-19,355.46-4,138.63

Finding the Fourth Proportional to 12,904.85, 19,355.46 and 4,138.63

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Solution

The fourth proportional to 12,904.85, 19,355.46 and 4,138.63 is: 6,207.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,904.85 : 19,355.46 = 4,138.63 : x
  2. Step 2: Convert to fraction form
    12,904.85/19,355.46 = 4,138.63/x
  3. Step 3: Cross multiply
    12,904.85x = 19,355.46 × 4,138.63
  4. Step 4: Simplify right side
    12,904.85x = 80,105,023.51
  5. Step 5: Solve for x
    x = 80,105,023.51/12,904.85
  6. Step 6: Final answer
    x = 6,207.36

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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.