Home / 15,434.51-21,314.75-13,183.25

Finding the Fourth Proportional to 15,434.51, 21,314.75 and 13,183.25

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Solution

The fourth proportional to 15,434.51, 21,314.75 and 13,183.25 is: 18,205.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,434.51 : 21,314.75 = 13,183.25 : x
  2. Step 2: Convert to fraction form
    15,434.51/21,314.75 = 13,183.25/x
  3. Step 3: Cross multiply
    15,434.51x = 21,314.75 × 13,183.25
  4. Step 4: Simplify right side
    15,434.51x = 280,997,505.45
  5. Step 5: Solve for x
    x = 280,997,505.45/15,434.51
  6. Step 6: Final answer
    x = 18,205.80

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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.