Home / 13,415.27-20,021.49-13,065.35

Finding the Fourth Proportional to 13,415.27, 20,021.49 and 13,065.35

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Solution

The fourth proportional to 13,415.27, 20,021.49 and 13,065.35 is: 19,499.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415.27 : 20,021.49 = 13,065.35 : x
  2. Step 2: Convert to fraction form
    13,415.27/20,021.49 = 13,065.35/x
  3. Step 3: Cross multiply
    13,415.27x = 20,021.49 × 13,065.35
  4. Step 4: Simplify right side
    13,415.27x = 261,587,674.26
  5. Step 5: Solve for x
    x = 261,587,674.26/13,415.27
  6. Step 6: Final answer
    x = 19,499.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.