Home / 20,128.29-27,757.90-14,672.40

Finding the Fourth Proportional to 20,128.29, 27,757.90 and 14,672.40

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Solution

The fourth proportional to 20,128.29, 27,757.90 and 14,672.40 is: 20,233.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128.29 : 27,757.90 = 14,672.40 : x
  2. Step 2: Convert to fraction form
    20,128.29/27,757.90 = 14,672.40/x
  3. Step 3: Cross multiply
    20,128.29x = 27,757.90 × 14,672.40
  4. Step 4: Simplify right side
    20,128.29x = 407,275,030.30
  5. Step 5: Solve for x
    x = 407,275,030.30/20,128.29
  6. Step 6: Final answer
    x = 20,233.96

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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.