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Finding the Fourth Proportional to 14,445.99, 21,639.13 and 8,504.57

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Solution

The fourth proportional to 14,445.99, 21,639.13 and 8,504.57 is: 12,739.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,445.99 : 21,639.13 = 8,504.57 : x
  2. Step 2: Convert to fraction form
    14,445.99/21,639.13 = 8,504.57/x
  3. Step 3: Cross multiply
    14,445.99x = 21,639.13 × 8,504.57
  4. Step 4: Simplify right side
    14,445.99x = 184,031,387.63
  5. Step 5: Solve for x
    x = 184,031,387.63/14,445.99
  6. Step 6: Final answer
    x = 12,739.28

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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.