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Finding the Fourth Proportional to 14,911.95, 20,579.04 and 8,539.53

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Solution

The fourth proportional to 14,911.95, 20,579.04 and 8,539.53 is: 11,784.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,911.95 : 20,579.04 = 8,539.53 : x
  2. Step 2: Convert to fraction form
    14,911.95/20,579.04 = 8,539.53/x
  3. Step 3: Cross multiply
    14,911.95x = 20,579.04 × 8,539.53
  4. Step 4: Simplify right side
    14,911.95x = 175,735,329.45
  5. Step 5: Solve for x
    x = 175,735,329.45/14,911.95
  6. Step 6: Final answer
    x = 11,784.87

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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.