Home / 30,038.76-41,454.60-19,428.39

Finding the Fourth Proportional to 30,038.76, 41,454.60 and 19,428.39

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Solution

The fourth proportional to 30,038.76, 41,454.60 and 19,428.39 is: 26,811.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,038.76 : 41,454.60 = 19,428.39 : x
  2. Step 2: Convert to fraction form
    30,038.76/41,454.60 = 19,428.39/x
  3. Step 3: Cross multiply
    30,038.76x = 41,454.60 × 19,428.39
  4. Step 4: Simplify right side
    30,038.76x = 805,396,136.09
  5. Step 5: Solve for x
    x = 805,396,136.09/30,038.76
  6. Step 6: Final answer
    x = 26,811.90

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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.