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Finding the Fourth Proportional to 11,290.95, 15,582.06 and 6,814.62

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Solution

The fourth proportional to 11,290.95, 15,582.06 and 6,814.62 is: 9,404.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,290.95 : 15,582.06 = 6,814.62 : x
  2. Step 2: Convert to fraction form
    11,290.95/15,582.06 = 6,814.62/x
  3. Step 3: Cross multiply
    11,290.95x = 15,582.06 × 6,814.62
  4. Step 4: Simplify right side
    11,290.95x = 106,185,817.72
  5. Step 5: Solve for x
    x = 106,185,817.72/11,290.95
  6. Step 6: Final answer
    x = 9,404.51

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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.