Home / 27,455.90-41,171.70-12,657.20

Finding the Fourth Proportional to 27,455.90, 41,171.70 and 12,657.20

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Solution

The fourth proportional to 27,455.90, 41,171.70 and 12,657.20 is: 18,980.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,455.90 : 41,171.70 = 12,657.20 : x
  2. Step 2: Convert to fraction form
    27,455.90/41,171.70 = 12,657.20/x
  3. Step 3: Cross multiply
    27,455.90x = 41,171.70 × 12,657.20
  4. Step 4: Simplify right side
    27,455.90x = 521,118,441.24
  5. Step 5: Solve for x
    x = 521,118,441.24/27,455.90
  6. Step 6: Final answer
    x = 18,980.20

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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.