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Finding the Fourth Proportional to 19,142.99, 28,604.67 and 14,614.99

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Solution

The fourth proportional to 19,142.99, 28,604.67 and 14,614.99 is: 21,838.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,142.99 : 28,604.67 = 14,614.99 : x
  2. Step 2: Convert to fraction form
    19,142.99/28,604.67 = 14,614.99/x
  3. Step 3: Cross multiply
    19,142.99x = 28,604.67 × 14,614.99
  4. Step 4: Simplify right side
    19,142.99x = 418,056,892.93
  5. Step 5: Solve for x
    x = 418,056,892.93/19,142.99
  6. Step 6: Final answer
    x = 21,838.64

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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.