Home / 20,325.66-28,043.90-13,954.20

Finding the Fourth Proportional to 20,325.66, 28,043.90 and 13,954.20

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Solution

The fourth proportional to 20,325.66, 28,043.90 and 13,954.20 is: 19,253.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,325.66 : 28,043.90 = 13,954.20 : x
  2. Step 2: Convert to fraction form
    20,325.66/28,043.90 = 13,954.20/x
  3. Step 3: Cross multiply
    20,325.66x = 28,043.90 × 13,954.20
  4. Step 4: Simplify right side
    20,325.66x = 391,330,189.38
  5. Step 5: Solve for x
    x = 391,330,189.38/20,325.66
  6. Step 6: Final answer
    x = 19,253.01

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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.