Home / 30,036.78-41,460.60-21,086.49

Finding the Fourth Proportional to 30,036.78, 41,460.60 and 21,086.49

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Solution

The fourth proportional to 30,036.78, 41,460.60 and 21,086.49 is: 29,106.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,036.78 : 41,460.60 = 21,086.49 : x
  2. Step 2: Convert to fraction form
    30,036.78/41,460.60 = 21,086.49/x
  3. Step 3: Cross multiply
    30,036.78x = 41,460.60 × 21,086.49
  4. Step 4: Simplify right side
    30,036.78x = 874,258,527.29
  5. Step 5: Solve for x
    x = 874,258,527.29/30,036.78
  6. Step 6: Final answer
    x = 29,106.27

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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.