Home / 30,007.40-41,397.09-18,678.74

Finding the Fourth Proportional to 30,007.40, 41,397.09 and 18,678.74

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Solution

The fourth proportional to 30,007.40, 41,397.09 and 18,678.74 is: 25,768.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,007.40 : 41,397.09 = 18,678.74 : x
  2. Step 2: Convert to fraction form
    30,007.40/41,397.09 = 18,678.74/x
  3. Step 3: Cross multiply
    30,007.40x = 41,397.09 × 18,678.74
  4. Step 4: Simplify right side
    30,007.40x = 773,245,480.87
  5. Step 5: Solve for x
    x = 773,245,480.87/30,007.40
  6. Step 6: Final answer
    x = 25,768.49

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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.