Home / 43,138.84-64,707.66-13,558.48

Finding the Fourth Proportional to 43,138.84, 64,707.66 and 13,558.48

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Solution

The fourth proportional to 43,138.84, 64,707.66 and 13,558.48 is: 20,337.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,138.84 : 64,707.66 = 13,558.48 : x
  2. Step 2: Convert to fraction form
    43,138.84/64,707.66 = 13,558.48/x
  3. Step 3: Cross multiply
    43,138.84x = 64,707.66 × 13,558.48
  4. Step 4: Simplify right side
    43,138.84x = 877,337,513.96
  5. Step 5: Solve for x
    x = 877,337,513.96/43,138.84
  6. Step 6: Final answer
    x = 20,337.53

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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.