Home / 11,331.12-15,637.08-6,855.36

Finding the Fourth Proportional to 11,331.12, 15,637.08 and 6,855.36

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Solution

The fourth proportional to 11,331.12, 15,637.08 and 6,855.36 is: 9,460.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,331.12 : 15,637.08 = 6,855.36 : x
  2. Step 2: Convert to fraction form
    11,331.12/15,637.08 = 6,855.36/x
  3. Step 3: Cross multiply
    11,331.12x = 15,637.08 × 6,855.36
  4. Step 4: Simplify right side
    11,331.12x = 107,197,812.75
  5. Step 5: Solve for x
    x = 107,197,812.75/11,331.12
  6. Step 6: Final answer
    x = 9,460.48

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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.