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Finding the Fourth Proportional to 12,752.99, 19,104.96 and 7,756.81

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Solution

The fourth proportional to 12,752.99, 19,104.96 and 7,756.81 is: 11,620.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,752.99 : 19,104.96 = 7,756.81 : x
  2. Step 2: Convert to fraction form
    12,752.99/19,104.96 = 7,756.81/x
  3. Step 3: Cross multiply
    12,752.99x = 19,104.96 × 7,756.81
  4. Step 4: Simplify right side
    12,752.99x = 148,193,410.47
  5. Step 5: Solve for x
    x = 148,193,410.47/12,752.99
  6. Step 6: Final answer
    x = 11,620.29

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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.