Home / 13,718.55-18,945.05-11,717.45

Finding the Fourth Proportional to 13,718.55, 18,945.05 and 11,717.45

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Solution

The fourth proportional to 13,718.55, 18,945.05 and 11,717.45 is: 16,181.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.55 : 18,945.05 = 11,717.45 : x
  2. Step 2: Convert to fraction form
    13,718.55/18,945.05 = 11,717.45/x
  3. Step 3: Cross multiply
    13,718.55x = 18,945.05 × 11,717.45
  4. Step 4: Simplify right side
    13,718.55x = 221,987,676.12
  5. Step 5: Solve for x
    x = 221,987,676.12/13,718.55
  6. Step 6: Final answer
    x = 16,181.57

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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.