Home / 20,663.44-28,507.37-13,491.07

Finding the Fourth Proportional to 20,663.44, 28,507.37 and 13,491.07

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Solution

The fourth proportional to 20,663.44, 28,507.37 and 13,491.07 is: 18,612.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663.44 : 28,507.37 = 13,491.07 : x
  2. Step 2: Convert to fraction form
    20,663.44/28,507.37 = 13,491.07/x
  3. Step 3: Cross multiply
    20,663.44x = 28,507.37 × 13,491.07
  4. Step 4: Simplify right side
    20,663.44x = 384,594,863.49
  5. Step 5: Solve for x
    x = 384,594,863.49/20,663.44
  6. Step 6: Final answer
    x = 18,612.33

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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.