Home / 13,880.80-19,156.76-7,911.24

Finding the Fourth Proportional to 13,880.80, 19,156.76 and 7,911.24

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Solution

The fourth proportional to 13,880.80, 19,156.76 and 7,911.24 is: 10,918.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,880.80 : 19,156.76 = 7,911.24 : x
  2. Step 2: Convert to fraction form
    13,880.80/19,156.76 = 7,911.24/x
  3. Step 3: Cross multiply
    13,880.80x = 19,156.76 × 7,911.24
  4. Step 4: Simplify right side
    13,880.80x = 151,553,725.98
  5. Step 5: Solve for x
    x = 151,553,725.98/13,880.80
  6. Step 6: Final answer
    x = 10,918.23

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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.