Home / 30,120.48-45,109.62-15,292.62

Finding the Fourth Proportional to 30,120.48, 45,109.62 and 15,292.62

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Solution

The fourth proportional to 30,120.48, 45,109.62 and 15,292.62 is: 22,902.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,120.48 : 45,109.62 = 15,292.62 : x
  2. Step 2: Convert to fraction form
    30,120.48/45,109.62 = 15,292.62/x
  3. Step 3: Cross multiply
    30,120.48x = 45,109.62 × 15,292.62
  4. Step 4: Simplify right side
    30,120.48x = 689,844,277.00
  5. Step 5: Solve for x
    x = 689,844,277.00/30,120.48
  6. Step 6: Final answer
    x = 22,902.83

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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.