Home / 11,516.61-15,895.10-7,211.70

Finding the Fourth Proportional to 11,516.61, 15,895.10 and 7,211.70

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Solution

The fourth proportional to 11,516.61, 15,895.10 and 7,211.70 is: 9,953.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,516.61 : 15,895.10 = 7,211.70 : x
  2. Step 2: Convert to fraction form
    11,516.61/15,895.10 = 7,211.70/x
  3. Step 3: Cross multiply
    11,516.61x = 15,895.10 × 7,211.70
  4. Step 4: Simplify right side
    11,516.61x = 114,630,656.61
  5. Step 5: Solve for x
    x = 114,630,656.61/11,516.61
  6. Step 6: Final answer
    x = 9,953.51

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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.