Home / 28,688.99-39,590.37-15,942.08

Finding the Fourth Proportional to 28,688.99, 39,590.37 and 15,942.08

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Solution

The fourth proportional to 28,688.99, 39,590.37 and 15,942.08 is: 21,999.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,688.99 : 39,590.37 = 15,942.08 : x
  2. Step 2: Convert to fraction form
    28,688.99/39,590.37 = 15,942.08/x
  3. Step 3: Cross multiply
    28,688.99x = 39,590.37 × 15,942.08
  4. Step 4: Simplify right side
    28,688.99x = 631,152,944.75
  5. Step 5: Solve for x
    x = 631,152,944.75/28,688.99
  6. Step 6: Final answer
    x = 21,999.84

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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.