Home / 11,431.63-17,115.10-7,261.30

Finding the Fourth Proportional to 11,431.63, 17,115.10 and 7,261.30

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Solution

The fourth proportional to 11,431.63, 17,115.10 and 7,261.30 is: 10,871.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.63 : 17,115.10 = 7,261.30 : x
  2. Step 2: Convert to fraction form
    11,431.63/17,115.10 = 7,261.30/x
  3. Step 3: Cross multiply
    11,431.63x = 17,115.10 × 7,261.30
  4. Step 4: Simplify right side
    11,431.63x = 124,277,782.60
  5. Step 5: Solve for x
    x = 124,277,782.60/11,431.63
  6. Step 6: Final answer
    x = 10,871.40

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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.