Home / 38,901.69-53,683.59-21,905.85

Finding the Fourth Proportional to 38,901.69, 53,683.59 and 21,905.85

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Solution

The fourth proportional to 38,901.69, 53,683.59 and 21,905.85 is: 30,229.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,901.69 : 53,683.59 = 21,905.85 : x
  2. Step 2: Convert to fraction form
    38,901.69/53,683.59 = 21,905.85/x
  3. Step 3: Cross multiply
    38,901.69x = 53,683.59 × 21,905.85
  4. Step 4: Simplify right side
    38,901.69x = 1,175,984,670.00
  5. Step 5: Solve for x
    x = 1,175,984,670.00/38,901.69
  6. Step 6: Final answer
    x = 30,229.66

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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.