Home / 19,107.51-28,672.20-7,419.21

Finding the Fourth Proportional to 19,107.51, 28,672.20 and 7,419.21

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Solution

The fourth proportional to 19,107.51, 28,672.20 and 7,419.21 is: 11,133.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,107.51 : 28,672.20 = 7,419.21 : x
  2. Step 2: Convert to fraction form
    19,107.51/28,672.20 = 7,419.21/x
  3. Step 3: Cross multiply
    19,107.51x = 28,672.20 × 7,419.21
  4. Step 4: Simplify right side
    19,107.51x = 212,725,072.96
  5. Step 5: Solve for x
    x = 212,725,072.96/19,107.51
  6. Step 6: Final answer
    x = 11,133.06

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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.