Home / 20,558.32-28,328.60-14,186.86

Finding the Fourth Proportional to 20,558.32, 28,328.60 and 14,186.86

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Solution

The fourth proportional to 20,558.32, 28,328.60 and 14,186.86 is: 19,548.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.32 : 28,328.60 = 14,186.86 : x
  2. Step 2: Convert to fraction form
    20,558.32/28,328.60 = 14,186.86/x
  3. Step 3: Cross multiply
    20,558.32x = 28,328.60 × 14,186.86
  4. Step 4: Simplify right side
    20,558.32x = 401,893,882.20
  5. Step 5: Solve for x
    x = 401,893,882.20/20,558.32
  6. Step 6: Final answer
    x = 19,548.97

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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.