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Finding the Fourth Proportional to 18,457.88, 25,463.02 and 12,081.68

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Solution

The fourth proportional to 18,457.88, 25,463.02 and 12,081.68 is: 16,666.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,457.88 : 25,463.02 = 12,081.68 : x
  2. Step 2: Convert to fraction form
    18,457.88/25,463.02 = 12,081.68/x
  3. Step 3: Cross multiply
    18,457.88x = 25,463.02 × 12,081.68
  4. Step 4: Simplify right side
    18,457.88x = 307,636,059.47
  5. Step 5: Solve for x
    x = 307,636,059.47/18,457.88
  6. Step 6: Final answer
    x = 16,666.92

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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.