Home / 30,128.68-41,572.74-18,942.76

Finding the Fourth Proportional to 30,128.68, 41,572.74 and 18,942.76

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Solution

The fourth proportional to 30,128.68, 41,572.74 and 18,942.76 is: 26,137.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,128.68 : 41,572.74 = 18,942.76 : x
  2. Step 2: Convert to fraction form
    30,128.68/41,572.74 = 18,942.76/x
  3. Step 3: Cross multiply
    30,128.68x = 41,572.74 × 18,942.76
  4. Step 4: Simplify right side
    30,128.68x = 787,502,436.36
  5. Step 5: Solve for x
    x = 787,502,436.36/30,128.68
  6. Step 6: Final answer
    x = 26,137.97

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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.