Home / 38,578.09-53,242.67-21,583.28

Finding the Fourth Proportional to 38,578.09, 53,242.67 and 21,583.28

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Solution

The fourth proportional to 38,578.09, 53,242.67 and 21,583.28 is: 29,787.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,578.09 : 53,242.67 = 21,583.28 : x
  2. Step 2: Convert to fraction form
    38,578.09/53,242.67 = 21,583.28/x
  3. Step 3: Cross multiply
    38,578.09x = 53,242.67 × 21,583.28
  4. Step 4: Simplify right side
    38,578.09x = 1,149,151,080.43
  5. Step 5: Solve for x
    x = 1,149,151,080.43/38,578.09
  6. Step 6: Final answer
    x = 29,787.66

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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.