Home / 28,675.80-39,627.36-21,589.92

Finding the Fourth Proportional to 28,675.80, 39,627.36 and 21,589.92

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Solution

The fourth proportional to 28,675.80, 39,627.36 and 21,589.92 is: 29,835.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,675.80 : 39,627.36 = 21,589.92 : x
  2. Step 2: Convert to fraction form
    28,675.80/39,627.36 = 21,589.92/x
  3. Step 3: Cross multiply
    28,675.80x = 39,627.36 × 21,589.92
  4. Step 4: Simplify right side
    28,675.80x = 855,551,532.21
  5. Step 5: Solve for x
    x = 855,551,532.21/28,675.80
  6. Step 6: Final answer
    x = 29,835.32

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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.