Home / 38,784.77-53,517.14-21,785.75

Finding the Fourth Proportional to 38,784.77, 53,517.14 and 21,785.75

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Solution

The fourth proportional to 38,784.77, 53,517.14 and 21,785.75 is: 30,061.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,784.77 : 53,517.14 = 21,785.75 : x
  2. Step 2: Convert to fraction form
    38,784.77/53,517.14 = 21,785.75/x
  3. Step 3: Cross multiply
    38,784.77x = 53,517.14 × 21,785.75
  4. Step 4: Simplify right side
    38,784.77x = 1,165,910,656.24
  5. Step 5: Solve for x
    x = 1,165,910,656.24/38,784.77
  6. Step 6: Final answer
    x = 30,061.05

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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.