Home / 21,030.37-31,533.73-6,982.87

Finding the Fourth Proportional to 21,030.37, 31,533.73 and 6,982.87

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Solution

The fourth proportional to 21,030.37, 31,533.73 and 6,982.87 is: 10,470.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030.37 : 31,533.73 = 6,982.87 : x
  2. Step 2: Convert to fraction form
    21,030.37/31,533.73 = 6,982.87/x
  3. Step 3: Cross multiply
    21,030.37x = 31,533.73 × 6,982.87
  4. Step 4: Simplify right side
    21,030.37x = 220,195,902.29
  5. Step 5: Solve for x
    x = 220,195,902.29/21,030.37
  6. Step 6: Final answer
    x = 10,470.38

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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.