Home / 10,122.51-15,185.57-3,102.38

Finding the Fourth Proportional to 10,122.51, 15,185.57 and 3,102.38

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Solution

The fourth proportional to 10,122.51, 15,185.57 and 3,102.38 is: 4,654.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,122.51 : 15,185.57 = 3,102.38 : x
  2. Step 2: Convert to fraction form
    10,122.51/15,185.57 = 3,102.38/x
  3. Step 3: Cross multiply
    10,122.51x = 15,185.57 × 3,102.38
  4. Step 4: Simplify right side
    10,122.51x = 47,111,317.22
  5. Step 5: Solve for x
    x = 47,111,317.22/10,122.51
  6. Step 6: Final answer
    x = 4,654.11

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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.