Home / 39,077.20-58,615.80-12,784.60

Finding the Fourth Proportional to 39,077.20, 58,615.80 and 12,784.60

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Solution

The fourth proportional to 39,077.20, 58,615.80 and 12,784.60 is: 19,176.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,077.20 : 58,615.80 = 12,784.60 : x
  2. Step 2: Convert to fraction form
    39,077.20/58,615.80 = 12,784.60/x
  3. Step 3: Cross multiply
    39,077.20x = 58,615.80 × 12,784.60
  4. Step 4: Simplify right side
    39,077.20x = 749,379,556.68
  5. Step 5: Solve for x
    x = 749,379,556.68/39,077.20
  6. Step 6: Final answer
    x = 19,176.90

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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.