Home / 11,985.54-17,980.14-4,193.76

Finding the Fourth Proportional to 11,985.54, 17,980.14 and 4,193.76

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Solution

The fourth proportional to 11,985.54, 17,980.14 and 4,193.76 is: 6,291.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.54 : 17,980.14 = 4,193.76 : x
  2. Step 2: Convert to fraction form
    11,985.54/17,980.14 = 4,193.76/x
  3. Step 3: Cross multiply
    11,985.54x = 17,980.14 × 4,193.76
  4. Step 4: Simplify right side
    11,985.54x = 75,404,391.93
  5. Step 5: Solve for x
    x = 75,404,391.93/11,985.54
  6. Step 6: Final answer
    x = 6,291.28

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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.