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Finding the Fourth Proportional to 11,282.84, 15,555.89 and 7,739.90

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Solution

The fourth proportional to 11,282.84, 15,555.89 and 7,739.90 is: 10,671.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,282.84 : 15,555.89 = 7,739.90 : x
  2. Step 2: Convert to fraction form
    11,282.84/15,555.89 = 7,739.90/x
  3. Step 3: Cross multiply
    11,282.84x = 15,555.89 × 7,739.90
  4. Step 4: Simplify right side
    11,282.84x = 120,400,994.31
  5. Step 5: Solve for x
    x = 120,400,994.31/11,282.84
  6. Step 6: Final answer
    x = 10,671.16

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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.