Home / 38,850.92-53,612.70-21,855.50

Finding the Fourth Proportional to 38,850.92, 53,612.70 and 21,855.50

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Solution

The fourth proportional to 38,850.92, 53,612.70 and 21,855.50 is: 30,159.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,850.92 : 53,612.70 = 21,855.50 : x
  2. Step 2: Convert to fraction form
    38,850.92/53,612.70 = 21,855.50/x
  3. Step 3: Cross multiply
    38,850.92x = 53,612.70 × 21,855.50
  4. Step 4: Simplify right side
    38,850.92x = 1,171,732,096.79
  5. Step 5: Solve for x
    x = 1,171,732,096.79/38,850.92
  6. Step 6: Final answer
    x = 30,159.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.