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Finding the Fourth Proportional to 19,209.66, 28,803.06 and 9,339

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Solution

The fourth proportional to 19,209.66, 28,803.06 and 9,339 is: 14,002.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,209.66 : 28,803.06 = 9,339 : x
  2. Step 2: Convert to fraction form
    19,209.66/28,803.06 = 9,339/x
  3. Step 3: Cross multiply
    19,209.66x = 28,803.06 × 9,339
  4. Step 4: Simplify right side
    19,209.66x = 268,991,777.34
  5. Step 5: Solve for x
    x = 268,991,777.34/19,209.66
  6. Step 6: Final answer
    x = 14,002.94

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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.