Home / 28,860.12-43,246.40-21,429.80

Finding the Fourth Proportional to 28,860.12, 43,246.40 and 21,429.80

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Solution

The fourth proportional to 28,860.12, 43,246.40 and 21,429.80 is: 32,112.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,860.12 : 43,246.40 = 21,429.80 : x
  2. Step 2: Convert to fraction form
    28,860.12/43,246.40 = 21,429.80/x
  3. Step 3: Cross multiply
    28,860.12x = 43,246.40 × 21,429.80
  4. Step 4: Simplify right side
    28,860.12x = 926,761,702.72
  5. Step 5: Solve for x
    x = 926,761,702.72/28,860.12
  6. Step 6: Final answer
    x = 32,112.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.