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Finding the Fourth Proportional to 18,822.24, 28,210.32 and 8,813.52

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Solution

The fourth proportional to 18,822.24, 28,210.32 and 8,813.52 is: 13,209.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,822.24 : 28,210.32 = 8,813.52 : x
  2. Step 2: Convert to fraction form
    18,822.24/28,210.32 = 8,813.52/x
  3. Step 3: Cross multiply
    18,822.24x = 28,210.32 × 8,813.52
  4. Step 4: Simplify right side
    18,822.24x = 248,632,219.53
  5. Step 5: Solve for x
    x = 248,632,219.53/18,822.24
  6. Step 6: Final answer
    x = 13,209.49

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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.