Home / 13,513.26-20,313.48-12,530.63

Finding the Fourth Proportional to 13,513.26, 20,313.48 and 12,530.63

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Solution

The fourth proportional to 13,513.26, 20,313.48 and 12,530.63 is: 18,836.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,513.26 : 20,313.48 = 12,530.63 : x
  2. Step 2: Convert to fraction form
    13,513.26/20,313.48 = 12,530.63/x
  3. Step 3: Cross multiply
    13,513.26x = 20,313.48 × 12,530.63
  4. Step 4: Simplify right side
    13,513.26x = 254,540,799.67
  5. Step 5: Solve for x
    x = 254,540,799.67/13,513.26
  6. Step 6: Final answer
    x = 18,836.37

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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.