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Finding the Fourth Proportional to 12,998.98, 17,919.93 and 9,266.50

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Solution

The fourth proportional to 12,998.98, 17,919.93 and 9,266.50 is: 12,774.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,998.98 : 17,919.93 = 9,266.50 : x
  2. Step 2: Convert to fraction form
    12,998.98/17,919.93 = 9,266.50/x
  3. Step 3: Cross multiply
    12,998.98x = 17,919.93 × 9,266.50
  4. Step 4: Simplify right side
    12,998.98x = 166,055,031.35
  5. Step 5: Solve for x
    x = 166,055,031.35/12,998.98
  6. Step 6: Final answer
    x = 12,774.47

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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.