Home / 20,670.69-28,532.00-12,172.14

Finding the Fourth Proportional to 20,670.69, 28,532.00 and 12,172.14

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Solution

The fourth proportional to 20,670.69, 28,532.00 and 12,172.14 is: 16,801.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.69 : 28,532.00 = 12,172.14 : x
  2. Step 2: Convert to fraction form
    20,670.69/28,532.00 = 12,172.14/x
  3. Step 3: Cross multiply
    20,670.69x = 28,532.00 × 12,172.14
  4. Step 4: Simplify right side
    20,670.69x = 347,295,437.62
  5. Step 5: Solve for x
    x = 347,295,437.62/20,670.69
  6. Step 6: Final answer
    x = 16,801.35

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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.