Home / 30,428.46-41,998.30-19,799.64

Finding the Fourth Proportional to 30,428.46, 41,998.30 and 19,799.64

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Solution

The fourth proportional to 30,428.46, 41,998.30 and 19,799.64 is: 27,328.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,428.46 : 41,998.30 = 19,799.64 : x
  2. Step 2: Convert to fraction form
    30,428.46/41,998.30 = 19,799.64/x
  3. Step 3: Cross multiply
    30,428.46x = 41,998.30 × 19,799.64
  4. Step 4: Simplify right side
    30,428.46x = 831,551,171.11
  5. Step 5: Solve for x
    x = 831,551,171.11/30,428.46
  6. Step 6: Final answer
    x = 27,328.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.