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Finding the Fourth Proportional to 18,886.16, 28,303.71 and 7,193

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Solution

The fourth proportional to 18,886.16, 28,303.71 and 7,193 is: 10,779.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886.16 : 28,303.71 = 7,193 : x
  2. Step 2: Convert to fraction form
    18,886.16/28,303.71 = 7,193/x
  3. Step 3: Cross multiply
    18,886.16x = 28,303.71 × 7,193
  4. Step 4: Simplify right side
    18,886.16x = 203,588,586.03
  5. Step 5: Solve for x
    x = 203,588,586.03/18,886.16
  6. Step 6: Final answer
    x = 10,779.78

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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.