Home / 38,900.06-53,681.57-21,905.97

Finding the Fourth Proportional to 38,900.06, 53,681.57 and 21,905.97

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Solution

The fourth proportional to 38,900.06, 53,681.57 and 21,905.97 is: 30,229.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,900.06 : 53,681.57 = 21,905.97 : x
  2. Step 2: Convert to fraction form
    38,900.06/53,681.57 = 21,905.97/x
  3. Step 3: Cross multiply
    38,900.06x = 53,681.57 × 21,905.97
  4. Step 4: Simplify right side
    38,900.06x = 1,175,946,752.44
  5. Step 5: Solve for x
    x = 1,175,946,752.44/38,900.06
  6. Step 6: Final answer
    x = 30,229.95

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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.