Home / 20,683.36-28,543.65-11,252.56

Finding the Fourth Proportional to 20,683.36, 28,543.65 and 11,252.56

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Solution

The fourth proportional to 20,683.36, 28,543.65 and 11,252.56 is: 15,528.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,683.36 : 28,543.65 = 11,252.56 : x
  2. Step 2: Convert to fraction form
    20,683.36/28,543.65 = 11,252.56/x
  3. Step 3: Cross multiply
    20,683.36x = 28,543.65 × 11,252.56
  4. Step 4: Simplify right side
    20,683.36x = 321,189,134.24
  5. Step 5: Solve for x
    x = 321,189,134.24/20,683.36
  6. Step 6: Final answer
    x = 15,528.87

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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.