Home / 13,929.76-19,222.80-7,879.93

Finding the Fourth Proportional to 13,929.76, 19,222.80 and 7,879.93

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Solution

The fourth proportional to 13,929.76, 19,222.80 and 7,879.93 is: 10,874.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.76 : 19,222.80 = 7,879.93 : x
  2. Step 2: Convert to fraction form
    13,929.76/19,222.80 = 7,879.93/x
  3. Step 3: Cross multiply
    13,929.76x = 19,222.80 × 7,879.93
  4. Step 4: Simplify right side
    13,929.76x = 151,474,318.40
  5. Step 5: Solve for x
    x = 151,474,318.40/13,929.76
  6. Step 6: Final answer
    x = 10,874.15

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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.