Home / 18,621.90-27,934.20-11,210.40

Finding the Fourth Proportional to 18,621.90, 27,934.20 and 11,210.40

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Solution

The fourth proportional to 18,621.90, 27,934.20 and 11,210.40 is: 16,816.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,621.90 : 27,934.20 = 11,210.40 : x
  2. Step 2: Convert to fraction form
    18,621.90/27,934.20 = 11,210.40/x
  3. Step 3: Cross multiply
    18,621.90x = 27,934.20 × 11,210.40
  4. Step 4: Simplify right side
    18,621.90x = 313,153,555.68
  5. Step 5: Solve for x
    x = 313,153,555.68/18,621.90
  6. Step 6: Final answer
    x = 16,816.41

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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.