Home / 12,904.32-19,355.94-4,139.04

Finding the Fourth Proportional to 12,904.32, 19,355.94 and 4,139.04

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Solution

The fourth proportional to 12,904.32, 19,355.94 and 4,139.04 is: 6,208.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,904.32 : 19,355.94 = 4,139.04 : x
  2. Step 2: Convert to fraction form
    12,904.32/19,355.94 = 4,139.04/x
  3. Step 3: Cross multiply
    12,904.32x = 19,355.94 × 4,139.04
  4. Step 4: Simplify right side
    12,904.32x = 80,115,009.90
  5. Step 5: Solve for x
    x = 80,115,009.90/12,904.32
  6. Step 6: Final answer
    x = 6,208.39

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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.