Home / 12,656.70-18,988.90-5,998.30

Finding the Fourth Proportional to 12,656.70, 18,988.90 and 5,998.30

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Solution

The fourth proportional to 12,656.70, 18,988.90 and 5,998.30 is: 8,999.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,656.70 : 18,988.90 = 5,998.30 : x
  2. Step 2: Convert to fraction form
    12,656.70/18,988.90 = 5,998.30/x
  3. Step 3: Cross multiply
    12,656.70x = 18,988.90 × 5,998.30
  4. Step 4: Simplify right side
    12,656.70x = 113,901,023.93
  5. Step 5: Solve for x
    x = 113,901,023.93/12,656.70
  6. Step 6: Final answer
    x = 8,999.27

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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.