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Finding the Fourth Proportional to 11,326.02, 15,619 and 6,787.99

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Solution

The fourth proportional to 11,326.02, 15,619 and 6,787.99 is: 9,360.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,326.02 : 15,619 = 6,787.99 : x
  2. Step 2: Convert to fraction form
    11,326.02/15,619 = 6,787.99/x
  3. Step 3: Cross multiply
    11,326.02x = 15,619 × 6,787.99
  4. Step 4: Simplify right side
    11,326.02x = 106,021,615.81
  5. Step 5: Solve for x
    x = 106,021,615.81/11,326.02
  6. Step 6: Final answer
    x = 9,360.89

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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.