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Finding the Fourth Proportional to 18,800.52, 28,178.76 and 9,435.48

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Solution

The fourth proportional to 18,800.52, 28,178.76 and 9,435.48 is: 14,142.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,800.52 : 28,178.76 = 9,435.48 : x
  2. Step 2: Convert to fraction form
    18,800.52/28,178.76 = 9,435.48/x
  3. Step 3: Cross multiply
    18,800.52x = 28,178.76 × 9,435.48
  4. Step 4: Simplify right side
    18,800.52x = 265,880,126.40
  5. Step 5: Solve for x
    x = 265,880,126.40/18,800.52
  6. Step 6: Final answer
    x = 14,142.17

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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.