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Finding the Fourth Proportional to 12,798.99, 19,187.19 and 5,002.35

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Solution

The fourth proportional to 12,798.99, 19,187.19 and 5,002.35 is: 7,499.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,798.99 : 19,187.19 = 5,002.35 : x
  2. Step 2: Convert to fraction form
    12,798.99/19,187.19 = 5,002.35/x
  3. Step 3: Cross multiply
    12,798.99x = 19,187.19 × 5,002.35
  4. Step 4: Simplify right side
    12,798.99x = 95,981,039.90
  5. Step 5: Solve for x
    x = 95,981,039.90/12,798.99
  6. Step 6: Final answer
    x = 7,499.11

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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.