Home / 11,985.08-17,971.64-6,989.20

Finding the Fourth Proportional to 11,985.08, 17,971.64 and 6,989.20

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Solution

The fourth proportional to 11,985.08, 17,971.64 and 6,989.20 is: 10,480.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.08 : 17,971.64 = 6,989.20 : x
  2. Step 2: Convert to fraction form
    11,985.08/17,971.64 = 6,989.20/x
  3. Step 3: Cross multiply
    11,985.08x = 17,971.64 × 6,989.20
  4. Step 4: Simplify right side
    11,985.08x = 125,607,386.29
  5. Step 5: Solve for x
    x = 125,607,386.29/11,985.08
  6. Step 6: Final answer
    x = 10,480.31

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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.