Home / 15,629.85-21,546.72-11,145.81

Finding the Fourth Proportional to 15,629.85, 21,546.72 and 11,145.81

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Solution

The fourth proportional to 15,629.85, 21,546.72 and 11,145.81 is: 15,365.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,629.85 : 21,546.72 = 11,145.81 : x
  2. Step 2: Convert to fraction form
    15,629.85/21,546.72 = 11,145.81/x
  3. Step 3: Cross multiply
    15,629.85x = 21,546.72 × 11,145.81
  4. Step 4: Simplify right side
    15,629.85x = 240,155,647.24
  5. Step 5: Solve for x
    x = 240,155,647.24/15,629.85
  6. Step 6: Final answer
    x = 15,365.19

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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.