Home / 18,772.60-28,139.22-6,289.56

Finding the Fourth Proportional to 18,772.60, 28,139.22 and 6,289.56

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Solution

The fourth proportional to 18,772.60, 28,139.22 and 6,289.56 is: 9,427.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,772.60 : 28,139.22 = 6,289.56 : x
  2. Step 2: Convert to fraction form
    18,772.60/28,139.22 = 6,289.56/x
  3. Step 3: Cross multiply
    18,772.60x = 28,139.22 × 6,289.56
  4. Step 4: Simplify right side
    18,772.60x = 176,983,312.54
  5. Step 5: Solve for x
    x = 176,983,312.54/18,772.60
  6. Step 6: Final answer
    x = 9,427.75

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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.