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Finding the Fourth Proportional to 18,121.79, 24,991.84 and 14,295.76

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Solution

The fourth proportional to 18,121.79, 24,991.84 and 14,295.76 is: 19,715.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.79 : 24,991.84 = 14,295.76 : x
  2. Step 2: Convert to fraction form
    18,121.79/24,991.84 = 14,295.76/x
  3. Step 3: Cross multiply
    18,121.79x = 24,991.84 × 14,295.76
  4. Step 4: Simplify right side
    18,121.79x = 357,277,301.99
  5. Step 5: Solve for x
    x = 357,277,301.99/18,121.79
  6. Step 6: Final answer
    x = 19,715.34

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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.