Home / 13,848.08-19,107.79-7,879.40

Finding the Fourth Proportional to 13,848.08, 19,107.79 and 7,879.40

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Solution

The fourth proportional to 13,848.08, 19,107.79 and 7,879.40 is: 10,872.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,848.08 : 19,107.79 = 7,879.40 : x
  2. Step 2: Convert to fraction form
    13,848.08/19,107.79 = 7,879.40/x
  3. Step 3: Cross multiply
    13,848.08x = 19,107.79 × 7,879.40
  4. Step 4: Simplify right side
    13,848.08x = 150,557,920.53
  5. Step 5: Solve for x
    x = 150,557,920.53/13,848.08
  6. Step 6: Final answer
    x = 10,872.12

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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.