Home / 12,130.08-18,170.64-7,736.64

Finding the Fourth Proportional to 12,130.08, 18,170.64 and 7,736.64

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Solution

The fourth proportional to 12,130.08, 18,170.64 and 7,736.64 is: 11,589.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,130.08 : 18,170.64 = 7,736.64 : x
  2. Step 2: Convert to fraction form
    12,130.08/18,170.64 = 7,736.64/x
  3. Step 3: Cross multiply
    12,130.08x = 18,170.64 × 7,736.64
  4. Step 4: Simplify right side
    12,130.08x = 140,579,700.25
  5. Step 5: Solve for x
    x = 140,579,700.25/12,130.08
  6. Step 6: Final answer
    x = 11,589.35

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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.