Home / 43,420.16-65,138.88-13,837.04

Finding the Fourth Proportional to 43,420.16, 65,138.88 and 13,837.04

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Solution

The fourth proportional to 43,420.16, 65,138.88 and 13,837.04 is: 20,758.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,420.16 : 65,138.88 = 13,837.04 : x
  2. Step 2: Convert to fraction form
    43,420.16/65,138.88 = 13,837.04/x
  3. Step 3: Cross multiply
    43,420.16x = 65,138.88 × 13,837.04
  4. Step 4: Simplify right side
    43,420.16x = 901,329,288.12
  5. Step 5: Solve for x
    x = 901,329,288.12/43,420.16
  6. Step 6: Final answer
    x = 20,758.31

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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.