Home / 21,753.60-29,976.96-15,448.32

Finding the Fourth Proportional to 21,753.60, 29,976.96 and 15,448.32

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Solution

The fourth proportional to 21,753.60, 29,976.96 and 15,448.32 is: 21,288.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,753.60 : 29,976.96 = 15,448.32 : x
  2. Step 2: Convert to fraction form
    21,753.60/29,976.96 = 15,448.32/x
  3. Step 3: Cross multiply
    21,753.60x = 29,976.96 × 15,448.32
  4. Step 4: Simplify right side
    21,753.60x = 463,093,670.71
  5. Step 5: Solve for x
    x = 463,093,670.71/21,753.60
  6. Step 6: Final answer
    x = 21,288.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.