Home / 30,348.76-41,878.26-18,411.38

Finding the Fourth Proportional to 30,348.76, 41,878.26 and 18,411.38

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Solution

The fourth proportional to 30,348.76, 41,878.26 and 18,411.38 is: 25,405.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,348.76 : 41,878.26 = 18,411.38 : x
  2. Step 2: Convert to fraction form
    30,348.76/41,878.26 = 18,411.38/x
  3. Step 3: Cross multiply
    30,348.76x = 41,878.26 × 18,411.38
  4. Step 4: Simplify right side
    30,348.76x = 771,036,558.60
  5. Step 5: Solve for x
    x = 771,036,558.60/30,348.76
  6. Step 6: Final answer
    x = 25,405.87

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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.