Home / 20,365.87-30,501.42-19,805.32

Finding the Fourth Proportional to 20,365.87, 30,501.42 and 19,805.32

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Solution

The fourth proportional to 20,365.87, 30,501.42 and 19,805.32 is: 29,661.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.87 : 30,501.42 = 19,805.32 : x
  2. Step 2: Convert to fraction form
    20,365.87/30,501.42 = 19,805.32/x
  3. Step 3: Cross multiply
    20,365.87x = 30,501.42 × 19,805.32
  4. Step 4: Simplify right side
    20,365.87x = 604,090,383.55
  5. Step 5: Solve for x
    x = 604,090,383.55/20,365.87
  6. Step 6: Final answer
    x = 29,661.90

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1.5x scale

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.