Home / 39,258.72-58,879.74-12,957.20

Finding the Fourth Proportional to 39,258.72, 58,879.74 and 12,957.20

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Solution

The fourth proportional to 39,258.72, 58,879.74 and 12,957.20 is: 19,433.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,258.72 : 58,879.74 = 12,957.20 : x
  2. Step 2: Convert to fraction form
    39,258.72/58,879.74 = 12,957.20/x
  3. Step 3: Cross multiply
    39,258.72x = 58,879.74 × 12,957.20
  4. Step 4: Simplify right side
    39,258.72x = 762,916,567.13
  5. Step 5: Solve for x
    x = 762,916,567.13/39,258.72
  6. Step 6: Final answer
    x = 19,433.05

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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.