Home / 38,905.44-53,685.63-21,909.21

Finding the Fourth Proportional to 38,905.44, 53,685.63 and 21,909.21

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Solution

The fourth proportional to 38,905.44, 53,685.63 and 21,909.21 is: 30,232.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,905.44 : 53,685.63 = 21,909.21 : x
  2. Step 2: Convert to fraction form
    38,905.44/53,685.63 = 21,909.21/x
  3. Step 3: Cross multiply
    38,905.44x = 53,685.63 × 21,909.21
  4. Step 4: Simplify right side
    38,905.44x = 1,176,209,741.65
  5. Step 5: Solve for x
    x = 1,176,209,741.65/38,905.44
  6. Step 6: Final answer
    x = 30,232.53

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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.