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Finding the Fourth Proportional to 12,603.91, 18,908.98 and 5,210.49

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Solution

The fourth proportional to 12,603.91, 18,908.98 and 5,210.49 is: 7,817.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603.91 : 18,908.98 = 5,210.49 : x
  2. Step 2: Convert to fraction form
    12,603.91/18,908.98 = 5,210.49/x
  3. Step 3: Cross multiply
    12,603.91x = 18,908.98 × 5,210.49
  4. Step 4: Simplify right side
    12,603.91x = 98,524,969.68
  5. Step 5: Solve for x
    x = 98,524,969.68/12,603.91
  6. Step 6: Final answer
    x = 7,817.01

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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.