Home / 38,816.05-53,571.81-21,821.70

Finding the Fourth Proportional to 38,816.05, 53,571.81 and 21,821.70

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Solution

The fourth proportional to 38,816.05, 53,571.81 and 21,821.70 is: 30,117.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,816.05 : 53,571.81 = 21,821.70 : x
  2. Step 2: Convert to fraction form
    38,816.05/53,571.81 = 21,821.70/x
  3. Step 3: Cross multiply
    38,816.05x = 53,571.81 × 21,821.70
  4. Step 4: Simplify right side
    38,816.05x = 1,169,027,966.28
  5. Step 5: Solve for x
    x = 1,169,027,966.28/38,816.05
  6. Step 6: Final answer
    x = 30,117.13

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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.