Home / 18,928.18-28,370.75-11,516.31

Finding the Fourth Proportional to 18,928.18, 28,370.75 and 11,516.31

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Solution

The fourth proportional to 18,928.18, 28,370.75 and 11,516.31 is: 17,261.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928.18 : 28,370.75 = 11,516.31 : x
  2. Step 2: Convert to fraction form
    18,928.18/28,370.75 = 11,516.31/x
  3. Step 3: Cross multiply
    18,928.18x = 28,370.75 × 11,516.31
  4. Step 4: Simplify right side
    18,928.18x = 326,726,152.50
  5. Step 5: Solve for x
    x = 326,726,152.50/18,928.18
  6. Step 6: Final answer
    x = 17,261.36

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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.