Home / 13,367.36-18,447.35-7,399.55

Finding the Fourth Proportional to 13,367.36, 18,447.35 and 7,399.55

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Solution

The fourth proportional to 13,367.36, 18,447.35 and 7,399.55 is: 10,211.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,367.36 : 18,447.35 = 7,399.55 : x
  2. Step 2: Convert to fraction form
    13,367.36/18,447.35 = 7,399.55/x
  3. Step 3: Cross multiply
    13,367.36x = 18,447.35 × 7,399.55
  4. Step 4: Simplify right side
    13,367.36x = 136,502,097.81
  5. Step 5: Solve for x
    x = 136,502,097.81/13,367.36
  6. Step 6: Final answer
    x = 10,211.60

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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.