Home / 20,243.61-27,939.80-13,082.40

Finding the Fourth Proportional to 20,243.61, 27,939.80 and 13,082.40

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Solution

The fourth proportional to 20,243.61, 27,939.80 and 13,082.40 is: 18,056.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,243.61 : 27,939.80 = 13,082.40 : x
  2. Step 2: Convert to fraction form
    20,243.61/27,939.80 = 13,082.40/x
  3. Step 3: Cross multiply
    20,243.61x = 27,939.80 × 13,082.40
  4. Step 4: Simplify right side
    20,243.61x = 365,519,672.23
  5. Step 5: Solve for x
    x = 365,519,672.23/20,243.61
  6. Step 6: Final answer
    x = 18,056.05

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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.