Home / 28,399.37-39,190.88-15,653.07

Finding the Fourth Proportional to 28,399.37, 39,190.88 and 15,653.07

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Solution

The fourth proportional to 28,399.37, 39,190.88 and 15,653.07 is: 21,601.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,399.37 : 39,190.88 = 15,653.07 : x
  2. Step 2: Convert to fraction form
    28,399.37/39,190.88 = 15,653.07/x
  3. Step 3: Cross multiply
    28,399.37x = 39,190.88 × 15,653.07
  4. Step 4: Simplify right side
    28,399.37x = 613,457,509.74
  5. Step 5: Solve for x
    x = 613,457,509.74/28,399.37
  6. Step 6: Final answer
    x = 21,601.10

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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.