Home / 38,645.09-53,333.61-21,649.06

Finding the Fourth Proportional to 38,645.09, 53,333.61 and 21,649.06

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Solution

The fourth proportional to 38,645.09, 53,333.61 and 21,649.06 is: 29,877.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,645.09 : 53,333.61 = 21,649.06 : x
  2. Step 2: Convert to fraction form
    38,645.09/53,333.61 = 21,649.06/x
  3. Step 3: Cross multiply
    38,645.09x = 53,333.61 × 21,649.06
  4. Step 4: Simplify right side
    38,645.09x = 1,154,622,414.66
  5. Step 5: Solve for x
    x = 1,154,622,414.66/38,645.09
  6. Step 6: Final answer
    x = 29,877.60

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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.