Home / 20,683.72-28,544.70-11,252.08

Finding the Fourth Proportional to 20,683.72, 28,544.70 and 11,252.08

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Solution

The fourth proportional to 20,683.72, 28,544.70 and 11,252.08 is: 15,528.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,683.72 : 28,544.70 = 11,252.08 : x
  2. Step 2: Convert to fraction form
    20,683.72/28,544.70 = 11,252.08/x
  3. Step 3: Cross multiply
    20,683.72x = 28,544.70 × 11,252.08
  4. Step 4: Simplify right side
    20,683.72x = 321,187,247.98
  5. Step 5: Solve for x
    x = 321,187,247.98/20,683.72
  6. Step 6: Final answer
    x = 15,528.50

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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.