Home / 21,323.96-31,944.36-12,983.29

Finding the Fourth Proportional to 21,323.96, 31,944.36 and 12,983.29

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Solution

The fourth proportional to 21,323.96, 31,944.36 and 12,983.29 is: 19,449.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,323.96 : 31,944.36 = 12,983.29 : x
  2. Step 2: Convert to fraction form
    21,323.96/31,944.36 = 12,983.29/x
  3. Step 3: Cross multiply
    21,323.96x = 31,944.36 × 12,983.29
  4. Step 4: Simplify right side
    21,323.96x = 414,742,730.02
  5. Step 5: Solve for x
    x = 414,742,730.02/21,323.96
  6. Step 6: Final answer
    x = 19,449.61

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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.