Home / 13,718.67-18,931.82-7,431.03

Finding the Fourth Proportional to 13,718.67, 18,931.82 and 7,431.03

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Solution

The fourth proportional to 13,718.67, 18,931.82 and 7,431.03 is: 10,254.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.67 : 18,931.82 = 7,431.03 : x
  2. Step 2: Convert to fraction form
    13,718.67/18,931.82 = 7,431.03/x
  3. Step 3: Cross multiply
    13,718.67x = 18,931.82 × 7,431.03
  4. Step 4: Simplify right side
    13,718.67x = 140,682,885.22
  5. Step 5: Solve for x
    x = 140,682,885.22/13,718.67
  6. Step 6: Final answer
    x = 10,254.85

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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.