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Finding the Fourth Proportional to 30,392.15, 41,960.40 and 20,848.01

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Solution

The fourth proportional to 30,392.15, 41,960.40 and 20,848.01 is: 28,783.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,392.15 : 41,960.40 = 20,848.01 : x
  2. Step 2: Convert to fraction form
    30,392.15/41,960.40 = 20,848.01/x
  3. Step 3: Cross multiply
    30,392.15x = 41,960.40 × 20,848.01
  4. Step 4: Simplify right side
    30,392.15x = 874,790,629.00
  5. Step 5: Solve for x
    x = 874,790,629.00/30,392.15
  6. Step 6: Final answer
    x = 28,783.44

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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.