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Finding the Fourth Proportional to 29,979, 44,947.35 and 13,329.90

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Solution

The fourth proportional to 29,979, 44,947.35 and 13,329.90 is: 19,985.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,979 : 44,947.35 = 13,329.90 : x
  2. Step 2: Convert to fraction form
    29,979/44,947.35 = 13,329.90/x
  3. Step 3: Cross multiply
    29,979x = 44,947.35 × 13,329.90
  4. Step 4: Simplify right side
    29,979x = 599,143,680.77
  5. Step 5: Solve for x
    x = 599,143,680.77/29,979
  6. Step 6: Final answer
    x = 19,985.45

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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.