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Finding the Fourth Proportional to 13,897.75, 19,179.08 and 7,609.99

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Solution

The fourth proportional to 13,897.75, 19,179.08 and 7,609.99 is: 10,501.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,897.75 : 19,179.08 = 7,609.99 : x
  2. Step 2: Convert to fraction form
    13,897.75/19,179.08 = 7,609.99/x
  3. Step 3: Cross multiply
    13,897.75x = 19,179.08 × 7,609.99
  4. Step 4: Simplify right side
    13,897.75x = 145,952,607.01
  5. Step 5: Solve for x
    x = 145,952,607.01/13,897.75
  6. Step 6: Final answer
    x = 10,501.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.