Home / 11,615.90-17,427.18-4,218.36

Finding the Fourth Proportional to 11,615.90, 17,427.18 and 4,218.36

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Solution

The fourth proportional to 11,615.90, 17,427.18 and 4,218.36 is: 6,328.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,615.90 : 17,427.18 = 4,218.36 : x
  2. Step 2: Convert to fraction form
    11,615.90/17,427.18 = 4,218.36/x
  3. Step 3: Cross multiply
    11,615.90x = 17,427.18 × 4,218.36
  4. Step 4: Simplify right side
    11,615.90x = 73,514,119.02
  5. Step 5: Solve for x
    x = 73,514,119.02/11,615.90
  6. Step 6: Final answer
    x = 6,328.75

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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.