Home / 20,387.26-28,189.92-17,762.86

Finding the Fourth Proportional to 20,387.26, 28,189.92 and 17,762.86

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Solution

The fourth proportional to 20,387.26, 28,189.92 and 17,762.86 is: 24,561.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387.26 : 28,189.92 = 17,762.86 : x
  2. Step 2: Convert to fraction form
    20,387.26/28,189.92 = 17,762.86/x
  3. Step 3: Cross multiply
    20,387.26x = 28,189.92 × 17,762.86
  4. Step 4: Simplify right side
    20,387.26x = 500,733,602.37
  5. Step 5: Solve for x
    x = 500,733,602.37/20,387.26
  6. Step 6: Final answer
    x = 24,561.10

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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.