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Finding the Fourth Proportional to 18,802.88, 28,200.79 and 9,440.38

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Solution

The fourth proportional to 18,802.88, 28,200.79 and 9,440.38 is: 14,158.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,802.88 : 28,200.79 = 9,440.38 : x
  2. Step 2: Convert to fraction form
    18,802.88/28,200.79 = 9,440.38/x
  3. Step 3: Cross multiply
    18,802.88x = 28,200.79 × 9,440.38
  4. Step 4: Simplify right side
    18,802.88x = 266,226,220.95
  5. Step 5: Solve for x
    x = 266,226,220.95/18,802.88
  6. Step 6: Final answer
    x = 14,158.80

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1.5x scale

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.