Home / 18,908.13-28,362.20-18,880.80

Finding the Fourth Proportional to 18,908.13, 28,362.20 and 18,880.80

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Solution

The fourth proportional to 18,908.13, 28,362.20 and 18,880.80 is: 28,321.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,908.13 : 28,362.20 = 18,880.80 : x
  2. Step 2: Convert to fraction form
    18,908.13/28,362.20 = 18,880.80/x
  3. Step 3: Cross multiply
    18,908.13x = 28,362.20 × 18,880.80
  4. Step 4: Simplify right side
    18,908.13x = 535,500,931.20
  5. Step 5: Solve for x
    x = 535,500,931.20/18,908.13
  6. Step 6: Final answer
    x = 28,321.19

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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.