Home / 11,988.51-17,987.95-6,435.37

Finding the Fourth Proportional to 11,988.51, 17,987.95 and 6,435.37

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Solution

The fourth proportional to 11,988.51, 17,987.95 and 6,435.37 is: 9,655.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,988.51 : 17,987.95 = 6,435.37 : x
  2. Step 2: Convert to fraction form
    11,988.51/17,987.95 = 6,435.37/x
  3. Step 3: Cross multiply
    11,988.51x = 17,987.95 × 6,435.37
  4. Step 4: Simplify right side
    11,988.51x = 115,759,113.79
  5. Step 5: Solve for x
    x = 115,759,113.79/11,988.51
  6. Step 6: Final answer
    x = 9,655.84

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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.