Home / 30,081.12-45,072.36-21,300.27

Finding the Fourth Proportional to 30,081.12, 45,072.36 and 21,300.27

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Solution

The fourth proportional to 30,081.12, 45,072.36 and 21,300.27 is: 31,915.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,081.12 : 45,072.36 = 21,300.27 : x
  2. Step 2: Convert to fraction form
    30,081.12/45,072.36 = 21,300.27/x
  3. Step 3: Cross multiply
    30,081.12x = 45,072.36 × 21,300.27
  4. Step 4: Simplify right side
    30,081.12x = 960,053,437.54
  5. Step 5: Solve for x
    x = 960,053,437.54/30,081.12
  6. Step 6: Final answer
    x = 31,915.48

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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.