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Finding the Fourth Proportional to 11,071, 15,278.94 and 6,103.96

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Solution

The fourth proportional to 11,071, 15,278.94 and 6,103.96 is: 8,423.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,071 : 15,278.94 = 6,103.96 : x
  2. Step 2: Convert to fraction form
    11,071/15,278.94 = 6,103.96/x
  3. Step 3: Cross multiply
    11,071x = 15,278.94 × 6,103.96
  4. Step 4: Simplify right side
    11,071x = 93,262,038.60
  5. Step 5: Solve for x
    x = 93,262,038.60/11,071
  6. Step 6: Final answer
    x = 8,423.99

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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.