Home / 43,157.40-64,736.10-13,584.30

Finding the Fourth Proportional to 43,157.40, 64,736.10 and 13,584.30

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Solution

The fourth proportional to 43,157.40, 64,736.10 and 13,584.30 is: 20,376.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,157.40 : 64,736.10 = 13,584.30 : x
  2. Step 2: Convert to fraction form
    43,157.40/64,736.10 = 13,584.30/x
  3. Step 3: Cross multiply
    43,157.40x = 64,736.10 × 13,584.30
  4. Step 4: Simplify right side
    43,157.40x = 879,394,603.23
  5. Step 5: Solve for x
    x = 879,394,603.23/43,157.40
  6. Step 6: Final answer
    x = 20,376.45

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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.