Home / 21,970.80-32,958.36-6,388.56

Finding the Fourth Proportional to 21,970.80, 32,958.36 and 6,388.56

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Solution

The fourth proportional to 21,970.80, 32,958.36 and 6,388.56 is: 9,583.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,970.80 : 32,958.36 = 6,388.56 : x
  2. Step 2: Convert to fraction form
    21,970.80/32,958.36 = 6,388.56/x
  3. Step 3: Cross multiply
    21,970.80x = 32,958.36 × 6,388.56
  4. Step 4: Simplify right side
    21,970.80x = 210,556,460.36
  5. Step 5: Solve for x
    x = 210,556,460.36/21,970.80
  6. Step 6: Final answer
    x = 9,583.47

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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.