Home / 18,919.37-26,106.71-11,365.72

Finding the Fourth Proportional to 18,919.37, 26,106.71 and 11,365.72

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Solution

The fourth proportional to 18,919.37, 26,106.71 and 11,365.72 is: 15,683.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,919.37 : 26,106.71 = 11,365.72 : x
  2. Step 2: Convert to fraction form
    18,919.37/26,106.71 = 11,365.72/x
  3. Step 3: Cross multiply
    18,919.37x = 26,106.71 × 11,365.72
  4. Step 4: Simplify right side
    18,919.37x = 296,721,433.89
  5. Step 5: Solve for x
    x = 296,721,433.89/18,919.37
  6. Step 6: Final answer
    x = 15,683.47

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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.