Home / 12,457.17-18,664.61-7,516.43

Finding the Fourth Proportional to 12,457.17, 18,664.61 and 7,516.43

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Solution

The fourth proportional to 12,457.17, 18,664.61 and 7,516.43 is: 11,261.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457.17 : 18,664.61 = 7,516.43 : x
  2. Step 2: Convert to fraction form
    12,457.17/18,664.61 = 7,516.43/x
  3. Step 3: Cross multiply
    12,457.17x = 18,664.61 × 7,516.43
  4. Step 4: Simplify right side
    12,457.17x = 140,291,103.64
  5. Step 5: Solve for x
    x = 140,291,103.64/12,457.17
  6. Step 6: Final answer
    x = 11,261.88

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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.