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Finding the Fourth Proportional to 33,285.76, 49,925.90 and 9,912.20

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Solution

The fourth proportional to 33,285.76, 49,925.90 and 9,912.20 is: 14,867.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,285.76 : 49,925.90 = 9,912.20 : x
  2. Step 2: Convert to fraction form
    33,285.76/49,925.90 = 9,912.20/x
  3. Step 3: Cross multiply
    33,285.76x = 49,925.90 × 9,912.20
  4. Step 4: Simplify right side
    33,285.76x = 494,875,281.13
  5. Step 5: Solve for x
    x = 494,875,281.13/33,285.76
  6. Step 6: Final answer
    x = 14,867.48

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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.