Home / 39,878.16-59,815.08-12,174

Finding the Fourth Proportional to 39,878.16, 59,815.08 and 12,174

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Solution

The fourth proportional to 39,878.16, 59,815.08 and 12,174 is: 18,260.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,878.16 : 59,815.08 = 12,174 : x
  2. Step 2: Convert to fraction form
    39,878.16/59,815.08 = 12,174/x
  3. Step 3: Cross multiply
    39,878.16x = 59,815.08 × 12,174
  4. Step 4: Simplify right side
    39,878.16x = 728,188,783.92
  5. Step 5: Solve for x
    x = 728,188,783.92/39,878.16
  6. Step 6: Final answer
    x = 18,260.34

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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.