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Finding the Fourth Proportional to 14,008.88, 20,910.81 and 12,348.20

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Solution

The fourth proportional to 14,008.88, 20,910.81 and 12,348.20 is: 18,431.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,008.88 : 20,910.81 = 12,348.20 : x
  2. Step 2: Convert to fraction form
    14,008.88/20,910.81 = 12,348.20/x
  3. Step 3: Cross multiply
    14,008.88x = 20,910.81 × 12,348.20
  4. Step 4: Simplify right side
    14,008.88x = 258,210,864.04
  5. Step 5: Solve for x
    x = 258,210,864.04/14,008.88
  6. Step 6: Final answer
    x = 18,431.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.