Home / 20,502.42-28,295.43-12,549.90

Finding the Fourth Proportional to 20,502.42, 28,295.43 and 12,549.90

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Solution

The fourth proportional to 20,502.42, 28,295.43 and 12,549.90 is: 17,320.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,502.42 : 28,295.43 = 12,549.90 : x
  2. Step 2: Convert to fraction form
    20,502.42/28,295.43 = 12,549.90/x
  3. Step 3: Cross multiply
    20,502.42x = 28,295.43 × 12,549.90
  4. Step 4: Simplify right side
    20,502.42x = 355,104,816.96
  5. Step 5: Solve for x
    x = 355,104,816.96/20,502.42
  6. Step 6: Final answer
    x = 17,320.14

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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.