Home / 11,988.16-17,987.43-6,435.02

Finding the Fourth Proportional to 11,988.16, 17,987.43 and 6,435.02

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Solution

The fourth proportional to 11,988.16, 17,987.43 and 6,435.02 is: 9,655.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,988.16 : 17,987.43 = 6,435.02 : x
  2. Step 2: Convert to fraction form
    11,988.16/17,987.43 = 6,435.02/x
  3. Step 3: Cross multiply
    11,988.16x = 17,987.43 × 6,435.02
  4. Step 4: Simplify right side
    11,988.16x = 115,749,539.05
  5. Step 5: Solve for x
    x = 115,749,539.05/11,988.16
  6. Step 6: Final answer
    x = 9,655.32

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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.