Home / 18,990.12-28,266.99-18,709.32

Finding the Fourth Proportional to 18,990.12, 28,266.99 and 18,709.32

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Solution

The fourth proportional to 18,990.12, 28,266.99 and 18,709.32 is: 27,849.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990.12 : 28,266.99 = 18,709.32 : x
  2. Step 2: Convert to fraction form
    18,990.12/28,266.99 = 18,709.32/x
  3. Step 3: Cross multiply
    18,990.12x = 28,266.99 × 18,709.32
  4. Step 4: Simplify right side
    18,990.12x = 528,856,161.35
  5. Step 5: Solve for x
    x = 528,856,161.35/18,990.12
  6. Step 6: Final answer
    x = 27,849.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.