Home / 13,661.46-18,729.93-13,412.39

Finding the Fourth Proportional to 13,661.46, 18,729.93 and 13,412.39

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Solution

The fourth proportional to 13,661.46, 18,729.93 and 13,412.39 is: 18,388.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.46 : 18,729.93 = 13,412.39 : x
  2. Step 2: Convert to fraction form
    13,661.46/18,729.93 = 13,412.39/x
  3. Step 3: Cross multiply
    13,661.46x = 18,729.93 × 13,412.39
  4. Step 4: Simplify right side
    13,661.46x = 251,213,082.48
  5. Step 5: Solve for x
    x = 251,213,082.48/13,661.46
  6. Step 6: Final answer
    x = 18,388.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.