Home / 38,864.53-53,631.88-21,869.72

Finding the Fourth Proportional to 38,864.53, 53,631.88 and 21,869.72

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Solution

The fourth proportional to 38,864.53, 53,631.88 and 21,869.72 is: 30,179.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,864.53 : 53,631.88 = 21,869.72 : x
  2. Step 2: Convert to fraction form
    38,864.53/53,631.88 = 21,869.72/x
  3. Step 3: Cross multiply
    38,864.53x = 53,631.88 × 21,869.72
  4. Step 4: Simplify right side
    38,864.53x = 1,172,914,198.67
  5. Step 5: Solve for x
    x = 1,172,914,198.67/38,864.53
  6. Step 6: Final answer
    x = 30,179.55

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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.