Home / 13,911.36-19,198.20-7,943.08

Finding the Fourth Proportional to 13,911.36, 19,198.20 and 7,943.08

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Solution

The fourth proportional to 13,911.36, 19,198.20 and 7,943.08 is: 10,961.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,911.36 : 19,198.20 = 7,943.08 : x
  2. Step 2: Convert to fraction form
    13,911.36/19,198.20 = 7,943.08/x
  3. Step 3: Cross multiply
    13,911.36x = 19,198.20 × 7,943.08
  4. Step 4: Simplify right side
    13,911.36x = 152,492,838.46
  5. Step 5: Solve for x
    x = 152,492,838.46/13,911.36
  6. Step 6: Final answer
    x = 10,961.75

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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.