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Finding the Fourth Proportional to 28,999.61, 43,490.13 and 9,273.47

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Solution

The fourth proportional to 28,999.61, 43,490.13 and 9,273.47 is: 13,907.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,999.61 : 43,490.13 = 9,273.47 : x
  2. Step 2: Convert to fraction form
    28,999.61/43,490.13 = 9,273.47/x
  3. Step 3: Cross multiply
    28,999.61x = 43,490.13 × 9,273.47
  4. Step 4: Simplify right side
    28,999.61x = 403,304,198.40
  5. Step 5: Solve for x
    x = 403,304,198.40/28,999.61
  6. Step 6: Final answer
    x = 13,907.23

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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.