Home / 10,005.36-15,008.08-3,431.60

Finding the Fourth Proportional to 10,005.36, 15,008.08 and 3,431.60

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Solution

The fourth proportional to 10,005.36, 15,008.08 and 3,431.60 is: 5,147.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,005.36 : 15,008.08 = 3,431.60 : x
  2. Step 2: Convert to fraction form
    10,005.36/15,008.08 = 3,431.60/x
  3. Step 3: Cross multiply
    10,005.36x = 15,008.08 × 3,431.60
  4. Step 4: Simplify right side
    10,005.36x = 51,501,727.33
  5. Step 5: Solve for x
    x = 51,501,727.33/10,005.36
  6. Step 6: Final answer
    x = 5,147.41

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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.