Home / 30,490.20-45,805.56-21,627.54

Finding the Fourth Proportional to 30,490.20, 45,805.56 and 21,627.54

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Solution

The fourth proportional to 30,490.20, 45,805.56 and 21,627.54 is: 32,491.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,490.20 : 45,805.56 = 21,627.54 : x
  2. Step 2: Convert to fraction form
    30,490.20/45,805.56 = 21,627.54/x
  3. Step 3: Cross multiply
    30,490.20x = 45,805.56 × 21,627.54
  4. Step 4: Simplify right side
    30,490.20x = 990,661,581.12
  5. Step 5: Solve for x
    x = 990,661,581.12/30,490.20
  6. Step 6: Final answer
    x = 32,491.15

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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.