Home / 28,359.40-39,137.44-15,784.96

Finding the Fourth Proportional to 28,359.40, 39,137.44 and 15,784.96

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Solution

The fourth proportional to 28,359.40, 39,137.44 and 15,784.96 is: 21,784.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,359.40 : 39,137.44 = 15,784.96 : x
  2. Step 2: Convert to fraction form
    28,359.40/39,137.44 = 15,784.96/x
  3. Step 3: Cross multiply
    28,359.40x = 39,137.44 × 15,784.96
  4. Step 4: Simplify right side
    28,359.40x = 617,782,924.90
  5. Step 5: Solve for x
    x = 617,782,924.90/28,359.40
  6. Step 6: Final answer
    x = 21,784.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.