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Finding the Fourth Proportional to 19,224.60, 28,807.68 and 14,271

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Solution

The fourth proportional to 19,224.60, 28,807.68 and 14,271 is: 21,384.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,224.60 : 28,807.68 = 14,271 : x
  2. Step 2: Convert to fraction form
    19,224.60/28,807.68 = 14,271/x
  3. Step 3: Cross multiply
    19,224.60x = 28,807.68 × 14,271
  4. Step 4: Simplify right side
    19,224.60x = 411,114,401.28
  5. Step 5: Solve for x
    x = 411,114,401.28/19,224.60
  6. Step 6: Final answer
    x = 21,384.81

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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.