Home / 38,669.20-57,955.20-18,905.20

Finding the Fourth Proportional to 38,669.20, 57,955.20 and 18,905.20

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Solution

The fourth proportional to 38,669.20, 57,955.20 and 18,905.20 is: 28,334.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,669.20 : 57,955.20 = 18,905.20 : x
  2. Step 2: Convert to fraction form
    38,669.20/57,955.20 = 18,905.20/x
  3. Step 3: Cross multiply
    38,669.20x = 57,955.20 × 18,905.20
  4. Step 4: Simplify right side
    38,669.20x = 1,095,654,647.04
  5. Step 5: Solve for x
    x = 1,095,654,647.04/38,669.20
  6. Step 6: Final answer
    x = 28,334.04

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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.