Home / 13,080.20-18,050.18-7,111.67

Finding the Fourth Proportional to 13,080.20, 18,050.18 and 7,111.67

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Solution

The fourth proportional to 13,080.20, 18,050.18 and 7,111.67 is: 9,813.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.20 : 18,050.18 = 7,111.67 : x
  2. Step 2: Convert to fraction form
    13,080.20/18,050.18 = 7,111.67/x
  3. Step 3: Cross multiply
    13,080.20x = 18,050.18 × 7,111.67
  4. Step 4: Simplify right side
    13,080.20x = 128,366,833.35
  5. Step 5: Solve for x
    x = 128,366,833.35/13,080.20
  6. Step 6: Final answer
    x = 9,813.83

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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.