Home / 12,921.70-19,334.14-7,637.26

Finding the Fourth Proportional to 12,921.70, 19,334.14 and 7,637.26

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Solution

The fourth proportional to 12,921.70, 19,334.14 and 7,637.26 is: 11,427.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921.70 : 19,334.14 = 7,637.26 : x
  2. Step 2: Convert to fraction form
    12,921.70/19,334.14 = 7,637.26/x
  3. Step 3: Cross multiply
    12,921.70x = 19,334.14 × 7,637.26
  4. Step 4: Simplify right side
    12,921.70x = 147,659,854.06
  5. Step 5: Solve for x
    x = 147,659,854.06/12,921.70
  6. Step 6: Final answer
    x = 11,427.28

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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.