Home / 11,135.72-15,370.08-6,419.36

Finding the Fourth Proportional to 11,135.72, 15,370.08 and 6,419.36

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Solution

The fourth proportional to 11,135.72, 15,370.08 and 6,419.36 is: 8,860.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,135.72 : 15,370.08 = 6,419.36 : x
  2. Step 2: Convert to fraction form
    11,135.72/15,370.08 = 6,419.36/x
  3. Step 3: Cross multiply
    11,135.72x = 15,370.08 × 6,419.36
  4. Step 4: Simplify right side
    11,135.72x = 98,666,076.75
  5. Step 5: Solve for x
    x = 98,666,076.75/11,135.72
  6. Step 6: Final answer
    x = 8,860.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.