Home / 13,784.13-19,022.55-7,816.05

Finding the Fourth Proportional to 13,784.13, 19,022.55 and 7,816.05

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Solution

The fourth proportional to 13,784.13, 19,022.55 and 7,816.05 is: 10,786.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,784.13 : 19,022.55 = 7,816.05 : x
  2. Step 2: Convert to fraction form
    13,784.13/19,022.55 = 7,816.05/x
  3. Step 3: Cross multiply
    13,784.13x = 19,022.55 × 7,816.05
  4. Step 4: Simplify right side
    13,784.13x = 148,681,201.93
  5. Step 5: Solve for x
    x = 148,681,201.93/13,784.13
  6. Step 6: Final answer
    x = 10,786.40

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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.