Home / 12,343.05-18,485.14-7,886.71

Finding the Fourth Proportional to 12,343.05, 18,485.14 and 7,886.71

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Solution

The fourth proportional to 12,343.05, 18,485.14 and 7,886.71 is: 11,811.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,343.05 : 18,485.14 = 7,886.71 : x
  2. Step 2: Convert to fraction form
    12,343.05/18,485.14 = 7,886.71/x
  3. Step 3: Cross multiply
    12,343.05x = 18,485.14 × 7,886.71
  4. Step 4: Simplify right side
    12,343.05x = 145,786,918.77
  5. Step 5: Solve for x
    x = 145,786,918.77/12,343.05
  6. Step 6: Final answer
    x = 11,811.26

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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.