Home / 13,784.12-19,023.50-8,120.66

Finding the Fourth Proportional to 13,784.12, 19,023.50 and 8,120.66

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Solution

The fourth proportional to 13,784.12, 19,023.50 and 8,120.66 is: 11,207.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,784.12 : 19,023.50 = 8,120.66 : x
  2. Step 2: Convert to fraction form
    13,784.12/19,023.50 = 8,120.66/x
  3. Step 3: Cross multiply
    13,784.12x = 19,023.50 × 8,120.66
  4. Step 4: Simplify right side
    13,784.12x = 154,483,375.51
  5. Step 5: Solve for x
    x = 154,483,375.51/13,784.12
  6. Step 6: Final answer
    x = 11,207.34

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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.