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Finding the Fourth Proportional to 12,999.83, 19,503 and 7,459.43

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Solution

The fourth proportional to 12,999.83, 19,503 and 7,459.43 is: 11,191.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999.83 : 19,503 = 7,459.43 : x
  2. Step 2: Convert to fraction form
    12,999.83/19,503 = 7,459.43/x
  3. Step 3: Cross multiply
    12,999.83x = 19,503 × 7,459.43
  4. Step 4: Simplify right side
    12,999.83x = 145,481,263.29
  5. Step 5: Solve for x
    x = 145,481,263.29/12,999.83
  6. Step 6: Final answer
    x = 11,191.01

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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.