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Finding the Fourth Proportional to 28,054.78, 42,072.98 and 9,329.66

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Solution

The fourth proportional to 28,054.78, 42,072.98 and 9,329.66 is: 13,991.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,054.78 : 42,072.98 = 9,329.66 : x
  2. Step 2: Convert to fraction form
    28,054.78/42,072.98 = 9,329.66/x
  3. Step 3: Cross multiply
    28,054.78x = 42,072.98 × 9,329.66
  4. Step 4: Simplify right side
    28,054.78x = 392,526,598.59
  5. Step 5: Solve for x
    x = 392,526,598.59/28,054.78
  6. Step 6: Final answer
    x = 13,991.43

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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.