Home / 10,115.09-15,172.63-3,190.13

Finding the Fourth Proportional to 10,115.09, 15,172.63 and 3,190.13

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Solution

The fourth proportional to 10,115.09, 15,172.63 and 3,190.13 is: 4,785.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.09 : 15,172.63 = 3,190.13 : x
  2. Step 2: Convert to fraction form
    10,115.09/15,172.63 = 3,190.13/x
  3. Step 3: Cross multiply
    10,115.09x = 15,172.63 × 3,190.13
  4. Step 4: Simplify right side
    10,115.09x = 48,402,662.14
  5. Step 5: Solve for x
    x = 48,402,662.14/10,115.09
  6. Step 6: Final answer
    x = 4,785.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.