Home / 38,854.91-53,619.71-21,859.18

Finding the Fourth Proportional to 38,854.91, 53,619.71 and 21,859.18

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Solution

The fourth proportional to 38,854.91, 53,619.71 and 21,859.18 is: 30,165.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,854.91 : 53,619.71 = 21,859.18 : x
  2. Step 2: Convert to fraction form
    38,854.91/53,619.71 = 21,859.18/x
  3. Step 3: Cross multiply
    38,854.91x = 53,619.71 × 21,859.18
  4. Step 4: Simplify right side
    38,854.91x = 1,172,082,649.09
  5. Step 5: Solve for x
    x = 1,172,082,649.09/38,854.91
  6. Step 6: Final answer
    x = 30,165.62

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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.