Home / 12,343.80-18,486.26-7,887.46

Finding the Fourth Proportional to 12,343.80, 18,486.26 and 7,887.46

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Solution

The fourth proportional to 12,343.80, 18,486.26 and 7,887.46 is: 11,812.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,343.80 : 18,486.26 = 7,887.46 : x
  2. Step 2: Convert to fraction form
    12,343.80/18,486.26 = 7,887.46/x
  3. Step 3: Cross multiply
    12,343.80x = 18,486.26 × 7,887.46
  4. Step 4: Simplify right side
    12,343.80x = 145,809,636.30
  5. Step 5: Solve for x
    x = 145,809,636.30/12,343.80
  6. Step 6: Final answer
    x = 11,812.38

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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.