Home / 39,971.58-59,986.62-19,209.66

Finding the Fourth Proportional to 39,971.58, 59,986.62 and 19,209.66

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Solution

The fourth proportional to 39,971.58, 59,986.62 and 19,209.66 is: 28,828.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,971.58 : 59,986.62 = 19,209.66 : x
  2. Step 2: Convert to fraction form
    39,971.58/59,986.62 = 19,209.66/x
  3. Step 3: Cross multiply
    39,971.58x = 59,986.62 × 19,209.66
  4. Step 4: Simplify right side
    39,971.58x = 1,152,322,574.75
  5. Step 5: Solve for x
    x = 1,152,322,574.75/39,971.58
  6. Step 6: Final answer
    x = 28,828.55

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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.