Home / 43,419.57-65,128.13-13,839.18

Finding the Fourth Proportional to 43,419.57, 65,128.13 and 13,839.18

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Solution

The fourth proportional to 43,419.57, 65,128.13 and 13,839.18 is: 20,758.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,419.57 : 65,128.13 = 13,839.18 : x
  2. Step 2: Convert to fraction form
    43,419.57/65,128.13 = 13,839.18/x
  3. Step 3: Cross multiply
    43,419.57x = 65,128.13 × 13,839.18
  4. Step 4: Simplify right side
    43,419.57x = 901,319,588.49
  5. Step 5: Solve for x
    x = 901,319,588.49/43,419.57
  6. Step 6: Final answer
    x = 20,758.37

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1.5x scale

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.