Home / 18,772.63-28,111.32-11,271.56

Finding the Fourth Proportional to 18,772.63, 28,111.32 and 11,271.56

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Solution

The fourth proportional to 18,772.63, 28,111.32 and 11,271.56 is: 16,878.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,772.63 : 28,111.32 = 11,271.56 : x
  2. Step 2: Convert to fraction form
    18,772.63/28,111.32 = 11,271.56/x
  3. Step 3: Cross multiply
    18,772.63x = 28,111.32 × 11,271.56
  4. Step 4: Simplify right side
    18,772.63x = 316,858,289.50
  5. Step 5: Solve for x
    x = 316,858,289.50/18,772.63
  6. Step 6: Final answer
    x = 16,878.74

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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.