Home / 13,561.26-20,345.55-12,259.99

Finding the Fourth Proportional to 13,561.26, 20,345.55 and 12,259.99

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Solution

The fourth proportional to 13,561.26, 20,345.55 and 12,259.99 is: 18,393.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.26 : 20,345.55 = 12,259.99 : x
  2. Step 2: Convert to fraction form
    13,561.26/20,345.55 = 12,259.99/x
  3. Step 3: Cross multiply
    13,561.26x = 20,345.55 × 12,259.99
  4. Step 4: Simplify right side
    13,561.26x = 249,436,239.54
  5. Step 5: Solve for x
    x = 249,436,239.54/13,561.26
  6. Step 6: Final answer
    x = 18,393.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.