Home / 28,716.87-39,629.75-17,386.23

Finding the Fourth Proportional to 28,716.87, 39,629.75 and 17,386.23

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Solution

The fourth proportional to 28,716.87, 39,629.75 and 17,386.23 is: 23,993.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,716.87 : 39,629.75 = 17,386.23 : x
  2. Step 2: Convert to fraction form
    28,716.87/39,629.75 = 17,386.23/x
  3. Step 3: Cross multiply
    28,716.87x = 39,629.75 × 17,386.23
  4. Step 4: Simplify right side
    28,716.87x = 689,011,861.41
  5. Step 5: Solve for x
    x = 689,011,861.41/28,716.87
  6. Step 6: Final answer
    x = 23,993.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.