Home / 12,938.14-19,407.32-7,091.56

Finding the Fourth Proportional to 12,938.14, 19,407.32 and 7,091.56

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Solution

The fourth proportional to 12,938.14, 19,407.32 and 7,091.56 is: 10,637.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.14 : 19,407.32 = 7,091.56 : x
  2. Step 2: Convert to fraction form
    12,938.14/19,407.32 = 7,091.56/x
  3. Step 3: Cross multiply
    12,938.14x = 19,407.32 × 7,091.56
  4. Step 4: Simplify right side
    12,938.14x = 137,628,174.22
  5. Step 5: Solve for x
    x = 137,628,174.22/12,938.14
  6. Step 6: Final answer
    x = 10,637.40

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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.