Home / 30,021.04-45,031.49-28,194.21

Finding the Fourth Proportional to 30,021.04, 45,031.49 and 28,194.21

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Solution

The fourth proportional to 30,021.04, 45,031.49 and 28,194.21 is: 42,291.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,021.04 : 45,031.49 = 28,194.21 : x
  2. Step 2: Convert to fraction form
    30,021.04/45,031.49 = 28,194.21/x
  3. Step 3: Cross multiply
    30,021.04x = 45,031.49 × 28,194.21
  4. Step 4: Simplify right side
    30,021.04x = 1,269,627,243.58
  5. Step 5: Solve for x
    x = 1,269,627,243.58/30,021.04
  6. Step 6: Final answer
    x = 42,291.25

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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.