Home / 28,979.40-43,436.70-16,505.40

Finding the Fourth Proportional to 28,979.40, 43,436.70 and 16,505.40

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Solution

The fourth proportional to 28,979.40, 43,436.70 and 16,505.40 is: 24,739.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,979.40 : 43,436.70 = 16,505.40 : x
  2. Step 2: Convert to fraction form
    28,979.40/43,436.70 = 16,505.40/x
  3. Step 3: Cross multiply
    28,979.40x = 43,436.70 × 16,505.40
  4. Step 4: Simplify right side
    28,979.40x = 716,940,108.18
  5. Step 5: Solve for x
    x = 716,940,108.18/28,979.40
  6. Step 6: Final answer
    x = 24,739.65

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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.