Home / 30,228.90-45,348.04-15,429.80

Finding the Fourth Proportional to 30,228.90, 45,348.04 and 15,429.80

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Solution

The fourth proportional to 30,228.90, 45,348.04 and 15,429.80 is: 23,147.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,228.90 : 45,348.04 = 15,429.80 : x
  2. Step 2: Convert to fraction form
    30,228.90/45,348.04 = 15,429.80/x
  3. Step 3: Cross multiply
    30,228.90x = 45,348.04 × 15,429.80
  4. Step 4: Simplify right side
    30,228.90x = 699,711,187.59
  5. Step 5: Solve for x
    x = 699,711,187.59/30,228.90
  6. Step 6: Final answer
    x = 23,147.09

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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.