Home / 13,590.42-20,385.52-8,939.81

Finding the Fourth Proportional to 13,590.42, 20,385.52 and 8,939.81

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Solution

The fourth proportional to 13,590.42, 20,385.52 and 8,939.81 is: 13,409.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.42 : 20,385.52 = 8,939.81 : x
  2. Step 2: Convert to fraction form
    13,590.42/20,385.52 = 8,939.81/x
  3. Step 3: Cross multiply
    13,590.42x = 20,385.52 × 8,939.81
  4. Step 4: Simplify right side
    13,590.42x = 182,242,551.27
  5. Step 5: Solve for x
    x = 182,242,551.27/13,590.42
  6. Step 6: Final answer
    x = 13,409.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.