Home / 13,784.91-19,022.60-8,119.89

Finding the Fourth Proportional to 13,784.91, 19,022.60 and 8,119.89

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Solution

The fourth proportional to 13,784.91, 19,022.60 and 8,119.89 is: 11,205.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,784.91 : 19,022.60 = 8,119.89 : x
  2. Step 2: Convert to fraction form
    13,784.91/19,022.60 = 8,119.89/x
  3. Step 3: Cross multiply
    13,784.91x = 19,022.60 × 8,119.89
  4. Step 4: Simplify right side
    13,784.91x = 154,461,419.51
  5. Step 5: Solve for x
    x = 154,461,419.51/13,784.91
  6. Step 6: Final answer
    x = 11,205.11

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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.