Home / 13,749.24-18,972.09-8,080.63

Finding the Fourth Proportional to 13,749.24, 18,972.09 and 8,080.63

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Solution

The fourth proportional to 13,749.24, 18,972.09 and 8,080.63 is: 11,150.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.24 : 18,972.09 = 8,080.63 : x
  2. Step 2: Convert to fraction form
    13,749.24/18,972.09 = 8,080.63/x
  3. Step 3: Cross multiply
    13,749.24x = 18,972.09 × 8,080.63
  4. Step 4: Simplify right side
    13,749.24x = 153,306,392.19
  5. Step 5: Solve for x
    x = 153,306,392.19/13,749.24
  6. Step 6: Final answer
    x = 11,150.17

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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.