Home / 12,516.18-18,785.10-6,516.54

Finding the Fourth Proportional to 12,516.18, 18,785.10 and 6,516.54

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Solution

The fourth proportional to 12,516.18, 18,785.10 and 6,516.54 is: 9,780.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,516.18 : 18,785.10 = 6,516.54 : x
  2. Step 2: Convert to fraction form
    12,516.18/18,785.10 = 6,516.54/x
  3. Step 3: Cross multiply
    12,516.18x = 18,785.10 × 6,516.54
  4. Step 4: Simplify right side
    12,516.18x = 122,413,855.55
  5. Step 5: Solve for x
    x = 122,413,855.55/12,516.18
  6. Step 6: Final answer
    x = 9,780.45

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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.