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Finding the Fourth Proportional to 14,465.61, 21,679.45 and 8,228.49

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Solution

The fourth proportional to 14,465.61, 21,679.45 and 8,228.49 is: 12,331.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,465.61 : 21,679.45 = 8,228.49 : x
  2. Step 2: Convert to fraction form
    14,465.61/21,679.45 = 8,228.49/x
  3. Step 3: Cross multiply
    14,465.61x = 21,679.45 × 8,228.49
  4. Step 4: Simplify right side
    14,465.61x = 178,388,987.99
  5. Step 5: Solve for x
    x = 178,388,987.99/14,465.61
  6. Step 6: Final answer
    x = 12,331.94

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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.