Home / 13,778.03-19,013.65-8,189.03

Finding the Fourth Proportional to 13,778.03, 19,013.65 and 8,189.03

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Solution

The fourth proportional to 13,778.03, 19,013.65 and 8,189.03 is: 11,300.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.03 : 19,013.65 = 8,189.03 : x
  2. Step 2: Convert to fraction form
    13,778.03/19,013.65 = 8,189.03/x
  3. Step 3: Cross multiply
    13,778.03x = 19,013.65 × 8,189.03
  4. Step 4: Simplify right side
    13,778.03x = 155,703,377.32
  5. Step 5: Solve for x
    x = 155,703,377.32/13,778.03
  6. Step 6: Final answer
    x = 11,300.84

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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.