Home / 30,117.12-45,150.52-19,020.64

Finding the Fourth Proportional to 30,117.12, 45,150.52 and 19,020.64

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Solution

The fourth proportional to 30,117.12, 45,150.52 and 19,020.64 is: 28,515.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,117.12 : 45,150.52 = 19,020.64 : x
  2. Step 2: Convert to fraction form
    30,117.12/45,150.52 = 19,020.64/x
  3. Step 3: Cross multiply
    30,117.12x = 45,150.52 × 19,020.64
  4. Step 4: Simplify right side
    30,117.12x = 858,791,786.73
  5. Step 5: Solve for x
    x = 858,791,786.73/30,117.12
  6. Step 6: Final answer
    x = 28,515.07

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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.