Home / 18,313.40-27,470.10-5,165.60

Finding the Fourth Proportional to 18,313.40, 27,470.10 and 5,165.60

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Solution

The fourth proportional to 18,313.40, 27,470.10 and 5,165.60 is: 7,748.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,313.40 : 27,470.10 = 5,165.60 : x
  2. Step 2: Convert to fraction form
    18,313.40/27,470.10 = 5,165.60/x
  3. Step 3: Cross multiply
    18,313.40x = 27,470.10 × 5,165.60
  4. Step 4: Simplify right side
    18,313.40x = 141,899,548.56
  5. Step 5: Solve for x
    x = 141,899,548.56/18,313.40
  6. Step 6: Final answer
    x = 7,748.40

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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.