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Finding the Fourth Proportional to 14,417.79, 19,896.80 and 8,451.15

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Solution

The fourth proportional to 14,417.79, 19,896.80 and 8,451.15 is: 11,662.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,417.79 : 19,896.80 = 8,451.15 : x
  2. Step 2: Convert to fraction form
    14,417.79/19,896.80 = 8,451.15/x
  3. Step 3: Cross multiply
    14,417.79x = 19,896.80 × 8,451.15
  4. Step 4: Simplify right side
    14,417.79x = 168,150,762.96
  5. Step 5: Solve for x
    x = 168,150,762.96/14,417.79
  6. Step 6: Final answer
    x = 11,662.73

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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.