Home / 39,479.82-54,482.86-21,575.58

Finding the Fourth Proportional to 39,479.82, 54,482.86 and 21,575.58

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Solution

The fourth proportional to 39,479.82, 54,482.86 and 21,575.58 is: 29,774.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,479.82 : 54,482.86 = 21,575.58 : x
  2. Step 2: Convert to fraction form
    39,479.82/54,482.86 = 21,575.58/x
  3. Step 3: Cross multiply
    39,479.82x = 54,482.86 × 21,575.58
  4. Step 4: Simplify right side
    39,479.82x = 1,175,499,304.56
  5. Step 5: Solve for x
    x = 1,175,499,304.56/39,479.82
  6. Step 6: Final answer
    x = 29,774.69

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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.