Home / 18,768.08-28,143.81-5,618.00

Finding the Fourth Proportional to 18,768.08, 28,143.81 and 5,618.00

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Solution

The fourth proportional to 18,768.08, 28,143.81 and 5,618.00 is: 8,424.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,768.08 : 28,143.81 = 5,618.00 : x
  2. Step 2: Convert to fraction form
    18,768.08/28,143.81 = 5,618.00/x
  3. Step 3: Cross multiply
    18,768.08x = 28,143.81 × 5,618.00
  4. Step 4: Simplify right side
    18,768.08x = 158,111,783.86
  5. Step 5: Solve for x
    x = 158,111,783.86/18,768.08
  6. Step 6: Final answer
    x = 8,424.51

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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.