Home / 13,919.84-19,210.20-7,953.38

Finding the Fourth Proportional to 13,919.84, 19,210.20 and 7,953.38

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Solution

The fourth proportional to 13,919.84, 19,210.20 and 7,953.38 is: 10,976.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.84 : 19,210.20 = 7,953.38 : x
  2. Step 2: Convert to fraction form
    13,919.84/19,210.20 = 7,953.38/x
  3. Step 3: Cross multiply
    13,919.84x = 19,210.20 × 7,953.38
  4. Step 4: Simplify right side
    13,919.84x = 152,786,020.48
  5. Step 5: Solve for x
    x = 152,786,020.48/13,919.84
  6. Step 6: Final answer
    x = 10,976.13

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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.