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Finding the Fourth Proportional to 13,503.99, 20,294.25 and 7,959.94

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Solution

The fourth proportional to 13,503.99, 20,294.25 and 7,959.94 is: 11,962.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,503.99 : 20,294.25 = 7,959.94 : x
  2. Step 2: Convert to fraction form
    13,503.99/20,294.25 = 7,959.94/x
  3. Step 3: Cross multiply
    13,503.99x = 20,294.25 × 7,959.94
  4. Step 4: Simplify right side
    13,503.99x = 161,541,012.35
  5. Step 5: Solve for x
    x = 161,541,012.35/13,503.99
  6. Step 6: Final answer
    x = 11,962.47

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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.