Home / 20,618.32-30,929.20-6,580.36

Finding the Fourth Proportional to 20,618.32, 30,929.20 and 6,580.36

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Solution

The fourth proportional to 20,618.32, 30,929.20 and 6,580.36 is: 9,871.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618.32 : 30,929.20 = 6,580.36 : x
  2. Step 2: Convert to fraction form
    20,618.32/30,929.20 = 6,580.36/x
  3. Step 3: Cross multiply
    20,618.32x = 30,929.20 × 6,580.36
  4. Step 4: Simplify right side
    20,618.32x = 203,525,270.51
  5. Step 5: Solve for x
    x = 203,525,270.51/20,618.32
  6. Step 6: Final answer
    x = 9,871.09

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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.