Home / 39,129.20-58,722.60-15,772.40

Finding the Fourth Proportional to 39,129.20, 58,722.60 and 15,772.40

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Solution

The fourth proportional to 39,129.20, 58,722.60 and 15,772.40 is: 23,670.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,129.20 : 58,722.60 = 15,772.40 : x
  2. Step 2: Convert to fraction form
    39,129.20/58,722.60 = 15,772.40/x
  3. Step 3: Cross multiply
    39,129.20x = 58,722.60 × 15,772.40
  4. Step 4: Simplify right side
    39,129.20x = 926,196,336.24
  5. Step 5: Solve for x
    x = 926,196,336.24/39,129.20
  6. Step 6: Final answer
    x = 23,670.21

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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.