Home / 12,427.23-18,637.94-7,971.42

Finding the Fourth Proportional to 12,427.23, 18,637.94 and 7,971.42

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Solution

The fourth proportional to 12,427.23, 18,637.94 and 7,971.42 is: 11,955.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,427.23 : 18,637.94 = 7,971.42 : x
  2. Step 2: Convert to fraction form
    12,427.23/18,637.94 = 7,971.42/x
  3. Step 3: Cross multiply
    12,427.23x = 18,637.94 × 7,971.42
  4. Step 4: Simplify right side
    12,427.23x = 148,570,867.60
  5. Step 5: Solve for x
    x = 148,570,867.60/12,427.23
  6. Step 6: Final answer
    x = 11,955.27

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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.