Home / 30,620.40-45,957.60-18,124.80

Finding the Fourth Proportional to 30,620.40, 45,957.60 and 18,124.80

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Solution

The fourth proportional to 30,620.40, 45,957.60 and 18,124.80 is: 27,203.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,620.40 : 45,957.60 = 18,124.80 : x
  2. Step 2: Convert to fraction form
    30,620.40/45,957.60 = 18,124.80/x
  3. Step 3: Cross multiply
    30,620.40x = 45,957.60 × 18,124.80
  4. Step 4: Simplify right side
    30,620.40x = 832,972,308.48
  5. Step 5: Solve for x
    x = 832,972,308.48/30,620.40
  6. Step 6: Final answer
    x = 27,203.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.