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Finding the Fourth Proportional to 19,813.88, 29,699.86 and 7,325.88

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Solution

The fourth proportional to 19,813.88, 29,699.86 and 7,325.88 is: 10,981.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,813.88 : 29,699.86 = 7,325.88 : x
  2. Step 2: Convert to fraction form
    19,813.88/29,699.86 = 7,325.88/x
  3. Step 3: Cross multiply
    19,813.88x = 29,699.86 × 7,325.88
  4. Step 4: Simplify right side
    19,813.88x = 217,577,610.38
  5. Step 5: Solve for x
    x = 217,577,610.38/19,813.88
  6. Step 6: Final answer
    x = 10,981.07

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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.