Home / 18,821.68-28,232.04-4,970.80

Finding the Fourth Proportional to 18,821.68, 28,232.04 and 4,970.80

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Solution

The fourth proportional to 18,821.68, 28,232.04 and 4,970.80 is: 7,456.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.68 : 28,232.04 = 4,970.80 : x
  2. Step 2: Convert to fraction form
    18,821.68/28,232.04 = 4,970.80/x
  3. Step 3: Cross multiply
    18,821.68x = 28,232.04 × 4,970.80
  4. Step 4: Simplify right side
    18,821.68x = 140,335,824.43
  5. Step 5: Solve for x
    x = 140,335,824.43/18,821.68
  6. Step 6: Final answer
    x = 7,456.07

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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.