Home / 39,986.90-59,980.43-10,404.69

Finding the Fourth Proportional to 39,986.90, 59,980.43 and 10,404.69

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Solution

The fourth proportional to 39,986.90, 59,980.43 and 10,404.69 is: 15,607.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,986.90 : 59,980.43 = 10,404.69 : x
  2. Step 2: Convert to fraction form
    39,986.90/59,980.43 = 10,404.69/x
  3. Step 3: Cross multiply
    39,986.90x = 59,980.43 × 10,404.69
  4. Step 4: Simplify right side
    39,986.90x = 624,077,780.22
  5. Step 5: Solve for x
    x = 624,077,780.22/39,986.90
  6. Step 6: Final answer
    x = 15,607.06

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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.