Home / 13,238.15-18,258.53-8,992.49

Finding the Fourth Proportional to 13,238.15, 18,258.53 and 8,992.49

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Solution

The fourth proportional to 13,238.15, 18,258.53 and 8,992.49 is: 12,402.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,238.15 : 18,258.53 = 8,992.49 : x
  2. Step 2: Convert to fraction form
    13,238.15/18,258.53 = 8,992.49/x
  3. Step 3: Cross multiply
    13,238.15x = 18,258.53 × 8,992.49
  4. Step 4: Simplify right side
    13,238.15x = 164,189,639.80
  5. Step 5: Solve for x
    x = 164,189,639.80/13,238.15
  6. Step 6: Final answer
    x = 12,402.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.