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Finding the Fourth Proportional to 18,888.48, 28,315.44 and 9,652.32

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Solution

The fourth proportional to 18,888.48, 28,315.44 and 9,652.32 is: 14,469.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,888.48 : 28,315.44 = 9,652.32 : x
  2. Step 2: Convert to fraction form
    18,888.48/28,315.44 = 9,652.32/x
  3. Step 3: Cross multiply
    18,888.48x = 28,315.44 × 9,652.32
  4. Step 4: Simplify right side
    18,888.48x = 273,309,687.82
  5. Step 5: Solve for x
    x = 273,309,687.82/18,888.48
  6. Step 6: Final answer
    x = 14,469.65

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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.