Home / 38,720.25-53,440.43-21,962.97

Finding the Fourth Proportional to 38,720.25, 53,440.43 and 21,962.97

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Solution

The fourth proportional to 38,720.25, 53,440.43 and 21,962.97 is: 30,312.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,720.25 : 53,440.43 = 21,962.97 : x
  2. Step 2: Convert to fraction form
    38,720.25/53,440.43 = 21,962.97/x
  3. Step 3: Cross multiply
    38,720.25x = 53,440.43 × 21,962.97
  4. Step 4: Simplify right side
    38,720.25x = 1,173,710,451.06
  5. Step 5: Solve for x
    x = 1,173,710,451.06/38,720.25
  6. Step 6: Final answer
    x = 30,312.57

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Similar ratio
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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.