Home / 28,916.20-43,409.40-18,386.20

Finding the Fourth Proportional to 28,916.20, 43,409.40 and 18,386.20

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Solution

The fourth proportional to 28,916.20, 43,409.40 and 18,386.20 is: 27,601.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,916.20 : 43,409.40 = 18,386.20 : x
  2. Step 2: Convert to fraction form
    28,916.20/43,409.40 = 18,386.20/x
  3. Step 3: Cross multiply
    28,916.20x = 43,409.40 × 18,386.20
  4. Step 4: Simplify right side
    28,916.20x = 798,133,910.28
  5. Step 5: Solve for x
    x = 798,133,910.28/28,916.20
  6. Step 6: Final answer
    x = 27,601.62

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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.