Home / 13,988.18-20,985.34-6,091.96

Finding the Fourth Proportional to 13,988.18, 20,985.34 and 6,091.96

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Solution

The fourth proportional to 13,988.18, 20,985.34 and 6,091.96 is: 9,139.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.18 : 20,985.34 = 6,091.96 : x
  2. Step 2: Convert to fraction form
    13,988.18/20,985.34 = 6,091.96/x
  3. Step 3: Cross multiply
    13,988.18x = 20,985.34 × 6,091.96
  4. Step 4: Simplify right side
    13,988.18x = 127,841,851.87
  5. Step 5: Solve for x
    x = 127,841,851.87/13,988.18
  6. Step 6: Final answer
    x = 9,139.28

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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.