Home / 28,630.10-39,508.80-15,883.21

Finding the Fourth Proportional to 28,630.10, 39,508.80 and 15,883.21

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Solution

The fourth proportional to 28,630.10, 39,508.80 and 15,883.21 is: 21,918.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,630.10 : 39,508.80 = 15,883.21 : x
  2. Step 2: Convert to fraction form
    28,630.10/39,508.80 = 15,883.21/x
  3. Step 3: Cross multiply
    28,630.10x = 39,508.80 × 15,883.21
  4. Step 4: Simplify right side
    28,630.10x = 627,526,567.25
  5. Step 5: Solve for x
    x = 627,526,567.25/28,630.10
  6. Step 6: Final answer
    x = 21,918.42

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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.