Home / 13,105.65-18,085.26-7,137.32

Finding the Fourth Proportional to 13,105.65, 18,085.26 and 7,137.32

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Solution

The fourth proportional to 13,105.65, 18,085.26 and 7,137.32 is: 9,849.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,105.65 : 18,085.26 = 7,137.32 : x
  2. Step 2: Convert to fraction form
    13,105.65/18,085.26 = 7,137.32/x
  3. Step 3: Cross multiply
    13,105.65x = 18,085.26 × 7,137.32
  4. Step 4: Simplify right side
    13,105.65x = 129,080,197.48
  5. Step 5: Solve for x
    x = 129,080,197.48/13,105.65
  6. Step 6: Final answer
    x = 9,849.20

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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.