Home / 13,880.46-19,153.97-7,911.98

Finding the Fourth Proportional to 13,880.46, 19,153.97 and 7,911.98

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Solution

The fourth proportional to 13,880.46, 19,153.97 and 7,911.98 is: 10,917.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,880.46 : 19,153.97 = 7,911.98 : x
  2. Step 2: Convert to fraction form
    13,880.46/19,153.97 = 7,911.98/x
  3. Step 3: Cross multiply
    13,880.46x = 19,153.97 × 7,911.98
  4. Step 4: Simplify right side
    13,880.46x = 151,545,793.73
  5. Step 5: Solve for x
    x = 151,545,793.73/13,880.46
  6. Step 6: Final answer
    x = 10,917.92

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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.