Home / 21,707.40-29,944.26-12,750.60

Finding the Fourth Proportional to 21,707.40, 29,944.26 and 12,750.60

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Solution

The fourth proportional to 21,707.40, 29,944.26 and 12,750.60 is: 17,588.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,707.40 : 29,944.26 = 12,750.60 : x
  2. Step 2: Convert to fraction form
    21,707.40/29,944.26 = 12,750.60/x
  3. Step 3: Cross multiply
    21,707.40x = 29,944.26 × 12,750.60
  4. Step 4: Simplify right side
    21,707.40x = 381,807,281.56
  5. Step 5: Solve for x
    x = 381,807,281.56/21,707.40
  6. Step 6: Final answer
    x = 17,588.81

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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.