Home / 43,455.40-65,190.30-18,507.40

Finding the Fourth Proportional to 43,455.40, 65,190.30 and 18,507.40

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Solution

The fourth proportional to 43,455.40, 65,190.30 and 18,507.40 is: 27,764.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,455.40 : 65,190.30 = 18,507.40 : x
  2. Step 2: Convert to fraction form
    43,455.40/65,190.30 = 18,507.40/x
  3. Step 3: Cross multiply
    43,455.40x = 65,190.30 × 18,507.40
  4. Step 4: Simplify right side
    43,455.40x = 1,206,502,958.22
  5. Step 5: Solve for x
    x = 1,206,502,958.22/43,455.40
  6. Step 6: Final answer
    x = 27,764.17

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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.