Home / 18,708.48-28,071.60-8,850.72

Finding the Fourth Proportional to 18,708.48, 28,071.60 and 8,850.72

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Solution

The fourth proportional to 18,708.48, 28,071.60 and 8,850.72 is: 13,280.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,708.48 : 28,071.60 = 8,850.72 : x
  2. Step 2: Convert to fraction form
    18,708.48/28,071.60 = 8,850.72/x
  3. Step 3: Cross multiply
    18,708.48x = 28,071.60 × 8,850.72
  4. Step 4: Simplify right side
    18,708.48x = 248,453,871.55
  5. Step 5: Solve for x
    x = 248,453,871.55/18,708.48
  6. Step 6: Final answer
    x = 13,280.28

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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.