Home / 38,914.55-53,704.70-21,689.60

Finding the Fourth Proportional to 38,914.55, 53,704.70 and 21,689.60

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Solution

The fourth proportional to 38,914.55, 53,704.70 and 21,689.60 is: 29,933.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,914.55 : 53,704.70 = 21,689.60 : x
  2. Step 2: Convert to fraction form
    38,914.55/53,704.70 = 21,689.60/x
  3. Step 3: Cross multiply
    38,914.55x = 53,704.70 × 21,689.60
  4. Step 4: Simplify right side
    38,914.55x = 1,164,833,461.12
  5. Step 5: Solve for x
    x = 1,164,833,461.12/38,914.55
  6. Step 6: Final answer
    x = 29,933.11

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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.