Home / 20,482.90-28,265.99-11,530.21

Finding the Fourth Proportional to 20,482.90, 28,265.99 and 11,530.21

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Solution

The fourth proportional to 20,482.90, 28,265.99 and 11,530.21 is: 15,911.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,482.90 : 28,265.99 = 11,530.21 : x
  2. Step 2: Convert to fraction form
    20,482.90/28,265.99 = 11,530.21/x
  3. Step 3: Cross multiply
    20,482.90x = 28,265.99 × 11,530.21
  4. Step 4: Simplify right side
    20,482.90x = 325,912,829.38
  5. Step 5: Solve for x
    x = 325,912,829.38/20,482.90
  6. Step 6: Final answer
    x = 15,911.46

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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.