Home / 30,121.40-41,569.08-18,185.54

Finding the Fourth Proportional to 30,121.40, 41,569.08 and 18,185.54

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Solution

The fourth proportional to 30,121.40, 41,569.08 and 18,185.54 is: 25,096.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,121.40 : 41,569.08 = 18,185.54 : x
  2. Step 2: Convert to fraction form
    30,121.40/41,569.08 = 18,185.54/x
  3. Step 3: Cross multiply
    30,121.40x = 41,569.08 × 18,185.54
  4. Step 4: Simplify right side
    30,121.40x = 755,956,167.10
  5. Step 5: Solve for x
    x = 755,956,167.10/30,121.40
  6. Step 6: Final answer
    x = 25,096.98

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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.