Home / 28,916.60-43,353.30-15,783.80

Finding the Fourth Proportional to 28,916.60, 43,353.30 and 15,783.80

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Solution

The fourth proportional to 28,916.60, 43,353.30 and 15,783.80 is: 23,663.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,916.60 : 43,353.30 = 15,783.80 : x
  2. Step 2: Convert to fraction form
    28,916.60/43,353.30 = 15,783.80/x
  3. Step 3: Cross multiply
    28,916.60x = 43,353.30 × 15,783.80
  4. Step 4: Simplify right side
    28,916.60x = 684,279,816.54
  5. Step 5: Solve for x
    x = 684,279,816.54/28,916.60
  6. Step 6: Final answer
    x = 23,663.91

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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.