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Finding the Fourth Proportional to 12,457.79, 17,265.95 and 12,224.51

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Solution

The fourth proportional to 12,457.79, 17,265.95 and 12,224.51 is: 16,942.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457.79 : 17,265.95 = 12,224.51 : x
  2. Step 2: Convert to fraction form
    12,457.79/17,265.95 = 12,224.51/x
  3. Step 3: Cross multiply
    12,457.79x = 17,265.95 × 12,224.51
  4. Step 4: Simplify right side
    12,457.79x = 211,067,778.43
  5. Step 5: Solve for x
    x = 211,067,778.43/12,457.79
  6. Step 6: Final answer
    x = 16,942.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.