Home / 28,071.54-38,745.24-18,513.15

Finding the Fourth Proportional to 28,071.54, 38,745.24 and 18,513.15

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Solution

The fourth proportional to 28,071.54, 38,745.24 and 18,513.15 is: 25,552.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,071.54 : 38,745.24 = 18,513.15 : x
  2. Step 2: Convert to fraction form
    28,071.54/38,745.24 = 18,513.15/x
  3. Step 3: Cross multiply
    28,071.54x = 38,745.24 × 18,513.15
  4. Step 4: Simplify right side
    28,071.54x = 717,296,585.20
  5. Step 5: Solve for x
    x = 717,296,585.20/28,071.54
  6. Step 6: Final answer
    x = 25,552.45

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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.