Home / 18,686.64-28,029.60-8,830.56

Finding the Fourth Proportional to 18,686.64, 28,029.60 and 8,830.56

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Solution

The fourth proportional to 18,686.64, 28,029.60 and 8,830.56 is: 13,245.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.64 : 28,029.60 = 8,830.56 : x
  2. Step 2: Convert to fraction form
    18,686.64/28,029.60 = 8,830.56/x
  3. Step 3: Cross multiply
    18,686.64x = 28,029.60 × 8,830.56
  4. Step 4: Simplify right side
    18,686.64x = 247,517,064.58
  5. Step 5: Solve for x
    x = 247,517,064.58/18,686.64
  6. Step 6: Final answer
    x = 13,245.67

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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.