Home / 30,039.26-41,455.29-19,428.90

Finding the Fourth Proportional to 30,039.26, 41,455.29 and 19,428.90

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Solution

The fourth proportional to 30,039.26, 41,455.29 and 19,428.90 is: 26,812.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,039.26 : 41,455.29 = 19,428.90 : x
  2. Step 2: Convert to fraction form
    30,039.26/41,455.29 = 19,428.90/x
  3. Step 3: Cross multiply
    30,039.26x = 41,455.29 × 19,428.90
  4. Step 4: Simplify right side
    30,039.26x = 805,430,683.88
  5. Step 5: Solve for x
    x = 805,430,683.88/30,039.26
  6. Step 6: Final answer
    x = 26,812.61

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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.