Home / 11,186.06-15,430.31-6,987.02

Finding the Fourth Proportional to 11,186.06, 15,430.31 and 6,987.02

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Solution

The fourth proportional to 11,186.06, 15,430.31 and 6,987.02 is: 9,638.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,186.06 : 15,430.31 = 6,987.02 : x
  2. Step 2: Convert to fraction form
    11,186.06/15,430.31 = 6,987.02/x
  3. Step 3: Cross multiply
    11,186.06x = 15,430.31 × 6,987.02
  4. Step 4: Simplify right side
    11,186.06x = 107,811,884.58
  5. Step 5: Solve for x
    x = 107,811,884.58/11,186.06
  6. Step 6: Final answer
    x = 9,638.06

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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.