Home / 28,720.80-43,022.16-17,005.68

Finding the Fourth Proportional to 28,720.80, 43,022.16 and 17,005.68

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Solution

The fourth proportional to 28,720.80, 43,022.16 and 17,005.68 is: 25,473.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,720.80 : 43,022.16 = 17,005.68 : x
  2. Step 2: Convert to fraction form
    28,720.80/43,022.16 = 17,005.68/x
  3. Step 3: Cross multiply
    28,720.80x = 43,022.16 × 17,005.68
  4. Step 4: Simplify right side
    28,720.80x = 731,621,085.87
  5. Step 5: Solve for x
    x = 731,621,085.87/28,720.80
  6. Step 6: Final answer
    x = 25,473.56

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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.