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Finding the Fourth Proportional to 18,784.50, 28,186.47 and 9,550.50

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Solution

The fourth proportional to 18,784.50, 28,186.47 and 9,550.50 is: 14,330.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,784.50 : 28,186.47 = 9,550.50 : x
  2. Step 2: Convert to fraction form
    18,784.50/28,186.47 = 9,550.50/x
  3. Step 3: Cross multiply
    18,784.50x = 28,186.47 × 9,550.50
  4. Step 4: Simplify right side
    18,784.50x = 269,194,881.74
  5. Step 5: Solve for x
    x = 269,194,881.74/18,784.50
  6. Step 6: Final answer
    x = 14,330.69

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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.