Home / 11,122.89-15,351.31-6,342.84

Finding the Fourth Proportional to 11,122.89, 15,351.31 and 6,342.84

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Solution

The fourth proportional to 11,122.89, 15,351.31 and 6,342.84 is: 8,754.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,122.89 : 15,351.31 = 6,342.84 : x
  2. Step 2: Convert to fraction form
    11,122.89/15,351.31 = 6,342.84/x
  3. Step 3: Cross multiply
    11,122.89x = 15,351.31 × 6,342.84
  4. Step 4: Simplify right side
    11,122.89x = 97,370,875.37
  5. Step 5: Solve for x
    x = 97,370,875.37/11,122.89
  6. Step 6: Final answer
    x = 8,754.10

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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.