Home / 13,089.19-18,063.26-7,120.85

Finding the Fourth Proportional to 13,089.19, 18,063.26 and 7,120.85

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Solution

The fourth proportional to 13,089.19, 18,063.26 and 7,120.85 is: 9,826.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,089.19 : 18,063.26 = 7,120.85 : x
  2. Step 2: Convert to fraction form
    13,089.19/18,063.26 = 7,120.85/x
  3. Step 3: Cross multiply
    13,089.19x = 18,063.26 × 7,120.85
  4. Step 4: Simplify right side
    13,089.19x = 128,625,838.19
  5. Step 5: Solve for x
    x = 128,625,838.19/13,089.19
  6. Step 6: Final answer
    x = 9,826.88

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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.