Home / 20,700.90-28,567.62-11,269.62

Finding the Fourth Proportional to 20,700.90, 28,567.62 and 11,269.62

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Solution

The fourth proportional to 20,700.90, 28,567.62 and 11,269.62 is: 15,552.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.90 : 28,567.62 = 11,269.62 : x
  2. Step 2: Convert to fraction form
    20,700.90/28,567.62 = 11,269.62/x
  3. Step 3: Cross multiply
    20,700.90x = 28,567.62 × 11,269.62
  4. Step 4: Simplify right side
    20,700.90x = 321,946,221.70
  5. Step 5: Solve for x
    x = 321,946,221.70/20,700.90
  6. Step 6: Final answer
    x = 15,552.28

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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.