Home / 11,987.04-17,985.75-6,433.90

Finding the Fourth Proportional to 11,987.04, 17,985.75 and 6,433.90

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Solution

The fourth proportional to 11,987.04, 17,985.75 and 6,433.90 is: 9,653.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.04 : 17,985.75 = 6,433.90 : x
  2. Step 2: Convert to fraction form
    11,987.04/17,985.75 = 6,433.90/x
  3. Step 3: Cross multiply
    11,987.04x = 17,985.75 × 6,433.90
  4. Step 4: Simplify right side
    11,987.04x = 115,718,447.83
  5. Step 5: Solve for x
    x = 115,718,447.83/11,987.04
  6. Step 6: Final answer
    x = 9,653.63

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1.5x scale

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.