Home / 20,700.94-28,567.30-11,269.50

Finding the Fourth Proportional to 20,700.94, 28,567.30 and 11,269.50

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Solution

The fourth proportional to 20,700.94, 28,567.30 and 11,269.50 is: 15,551.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.94 : 28,567.30 = 11,269.50 : x
  2. Step 2: Convert to fraction form
    20,700.94/28,567.30 = 11,269.50/x
  3. Step 3: Cross multiply
    20,700.94x = 28,567.30 × 11,269.50
  4. Step 4: Simplify right side
    20,700.94x = 321,939,187.35
  5. Step 5: Solve for x
    x = 321,939,187.35/20,700.94
  6. Step 6: Final answer
    x = 15,551.91

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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.