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Finding the Fourth Proportional to 28,167.36, 42,243.36 and 9,448.08

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Solution

The fourth proportional to 28,167.36, 42,243.36 and 9,448.08 is: 14,169.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,167.36 : 42,243.36 = 9,448.08 : x
  2. Step 2: Convert to fraction form
    28,167.36/42,243.36 = 9,448.08/x
  3. Step 3: Cross multiply
    28,167.36x = 42,243.36 × 9,448.08
  4. Step 4: Simplify right side
    28,167.36x = 399,118,644.75
  5. Step 5: Solve for x
    x = 399,118,644.75/28,167.36
  6. Step 6: Final answer
    x = 14,169.54

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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.