Home / 10,664.51-15,989.90-4,428.82

Finding the Fourth Proportional to 10,664.51, 15,989.90 and 4,428.82

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Solution

The fourth proportional to 10,664.51, 15,989.90 and 4,428.82 is: 6,640.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,664.51 : 15,989.90 = 4,428.82 : x
  2. Step 2: Convert to fraction form
    10,664.51/15,989.90 = 4,428.82/x
  3. Step 3: Cross multiply
    10,664.51x = 15,989.90 × 4,428.82
  4. Step 4: Simplify right side
    10,664.51x = 70,816,360.02
  5. Step 5: Solve for x
    x = 70,816,360.02/10,664.51
  6. Step 6: Final answer
    x = 6,640.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.