Home / 39,985.22-59,979.46-10,405.64

Finding the Fourth Proportional to 39,985.22, 59,979.46 and 10,405.64

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Solution

The fourth proportional to 39,985.22, 59,979.46 and 10,405.64 is: 15,608.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,985.22 : 59,979.46 = 10,405.64 : x
  2. Step 2: Convert to fraction form
    39,985.22/59,979.46 = 10,405.64/x
  3. Step 3: Cross multiply
    39,985.22x = 59,979.46 × 10,405.64
  4. Step 4: Simplify right side
    39,985.22x = 624,124,668.15
  5. Step 5: Solve for x
    x = 624,124,668.15/39,985.22
  6. Step 6: Final answer
    x = 15,608.88

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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.