Home / 39,611.12-54,653.72-21,947.12

Finding the Fourth Proportional to 39,611.12, 54,653.72 and 21,947.12

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Solution

The fourth proportional to 39,611.12, 54,653.72 and 21,947.12 is: 30,281.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,611.12 : 54,653.72 = 21,947.12 : x
  2. Step 2: Convert to fraction form
    39,611.12/54,653.72 = 21,947.12/x
  3. Step 3: Cross multiply
    39,611.12x = 54,653.72 × 21,947.12
  4. Step 4: Simplify right side
    39,611.12x = 1,199,491,751.29
  5. Step 5: Solve for x
    x = 1,199,491,751.29/39,611.12
  6. Step 6: Final answer
    x = 30,281.69

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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.