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Finding the Fourth Proportional to 18,969.99, 28,453.86 and 5,822.48

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Solution

The fourth proportional to 18,969.99, 28,453.86 and 5,822.48 is: 8,733.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,969.99 : 28,453.86 = 5,822.48 : x
  2. Step 2: Convert to fraction form
    18,969.99/28,453.86 = 5,822.48/x
  3. Step 3: Cross multiply
    18,969.99x = 28,453.86 × 5,822.48
  4. Step 4: Simplify right side
    18,969.99x = 165,671,888.50
  5. Step 5: Solve for x
    x = 165,671,888.50/18,969.99
  6. Step 6: Final answer
    x = 8,733.37

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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.