Home / 43,738.40-65,615.70-14,157.20

Finding the Fourth Proportional to 43,738.40, 65,615.70 and 14,157.20

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Solution

The fourth proportional to 43,738.40, 65,615.70 and 14,157.20 is: 21,238.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,738.40 : 65,615.70 = 14,157.20 : x
  2. Step 2: Convert to fraction form
    43,738.40/65,615.70 = 14,157.20/x
  3. Step 3: Cross multiply
    43,738.40x = 65,615.70 × 14,157.20
  4. Step 4: Simplify right side
    43,738.40x = 928,934,588.04
  5. Step 5: Solve for x
    x = 928,934,588.04/43,738.40
  6. Step 6: Final answer
    x = 21,238.42

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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.