Home / 18,315.60-27,470.70-5,169.30

Finding the Fourth Proportional to 18,315.60, 27,470.70 and 5,169.30

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Solution

The fourth proportional to 18,315.60, 27,470.70 and 5,169.30 is: 7,753.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.60 : 27,470.70 = 5,169.30 : x
  2. Step 2: Convert to fraction form
    18,315.60/27,470.70 = 5,169.30/x
  3. Step 3: Cross multiply
    18,315.60x = 27,470.70 × 5,169.30
  4. Step 4: Simplify right side
    18,315.60x = 142,004,289.51
  5. Step 5: Solve for x
    x = 142,004,289.51/18,315.60
  6. Step 6: Final answer
    x = 7,753.19

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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.