Home / 30,135.60-45,203.40-28,855.80

Finding the Fourth Proportional to 30,135.60, 45,203.40 and 28,855.80

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Solution

The fourth proportional to 30,135.60, 45,203.40 and 28,855.80 is: 43,283.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,135.60 : 45,203.40 = 28,855.80 : x
  2. Step 2: Convert to fraction form
    30,135.60/45,203.40 = 28,855.80/x
  3. Step 3: Cross multiply
    30,135.60x = 45,203.40 × 28,855.80
  4. Step 4: Simplify right side
    30,135.60x = 1,304,380,269.72
  5. Step 5: Solve for x
    x = 1,304,380,269.72/30,135.60
  6. Step 6: Final answer
    x = 43,283.70

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1.5x scale

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.