Home / 21,057.76-31,577.04-7,197.28

Finding the Fourth Proportional to 21,057.76, 31,577.04 and 7,197.28

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Solution

The fourth proportional to 21,057.76, 31,577.04 and 7,197.28 is: 10,792.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,057.76 : 31,577.04 = 7,197.28 : x
  2. Step 2: Convert to fraction form
    21,057.76/31,577.04 = 7,197.28/x
  3. Step 3: Cross multiply
    21,057.76x = 31,577.04 × 7,197.28
  4. Step 4: Simplify right side
    21,057.76x = 227,268,798.45
  5. Step 5: Solve for x
    x = 227,268,798.45/21,057.76
  6. Step 6: Final answer
    x = 10,792.64

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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.