Home / 20,700.76-28,567.18-11,269.32

Finding the Fourth Proportional to 20,700.76, 28,567.18 and 11,269.32

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Solution

The fourth proportional to 20,700.76, 28,567.18 and 11,269.32 is: 15,551.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.76 : 28,567.18 = 11,269.32 : x
  2. Step 2: Convert to fraction form
    20,700.76/28,567.18 = 11,269.32/x
  3. Step 3: Cross multiply
    20,700.76x = 28,567.18 × 11,269.32
  4. Step 4: Simplify right side
    20,700.76x = 321,932,692.92
  5. Step 5: Solve for x
    x = 321,932,692.92/20,700.76
  6. Step 6: Final answer
    x = 15,551.73

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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.