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Finding the Fourth Proportional to 28,395.99, 42,593.09 and 8,673.75

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Solution

The fourth proportional to 28,395.99, 42,593.09 and 8,673.75 is: 13,010.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,395.99 : 42,593.09 = 8,673.75 : x
  2. Step 2: Convert to fraction form
    28,395.99/42,593.09 = 8,673.75/x
  3. Step 3: Cross multiply
    28,395.99x = 42,593.09 × 8,673.75
  4. Step 4: Simplify right side
    28,395.99x = 369,441,771.02
  5. Step 5: Solve for x
    x = 369,441,771.02/28,395.99
  6. Step 6: Final answer
    x = 13,010.35

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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.