Home / 28,357.52-39,138.54-16,421.96

Finding the Fourth Proportional to 28,357.52, 39,138.54 and 16,421.96

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Solution

The fourth proportional to 28,357.52, 39,138.54 and 16,421.96 is: 22,665.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,357.52 : 39,138.54 = 16,421.96 : x
  2. Step 2: Convert to fraction form
    28,357.52/39,138.54 = 16,421.96/x
  3. Step 3: Cross multiply
    28,357.52x = 39,138.54 × 16,421.96
  4. Step 4: Simplify right side
    28,357.52x = 642,731,342.65
  5. Step 5: Solve for x
    x = 642,731,342.65/28,357.52
  6. Step 6: Final answer
    x = 22,665.29

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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.