Home / 43,973.73-65,970.45-13,989.69

Finding the Fourth Proportional to 43,973.73, 65,970.45 and 13,989.69

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Solution

The fourth proportional to 43,973.73, 65,970.45 and 13,989.69 is: 20,987.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,973.73 : 65,970.45 = 13,989.69 : x
  2. Step 2: Convert to fraction form
    43,973.73/65,970.45 = 13,989.69/x
  3. Step 3: Cross multiply
    43,973.73x = 65,970.45 × 13,989.69
  4. Step 4: Simplify right side
    43,973.73x = 922,906,144.66
  5. Step 5: Solve for x
    x = 922,906,144.66/43,973.73
  6. Step 6: Final answer
    x = 20,987.67

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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.