Home / 18,789.87-28,171.46-9,423.13

Finding the Fourth Proportional to 18,789.87, 28,171.46 and 9,423.13

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Solution

The fourth proportional to 18,789.87, 28,171.46 and 9,423.13 is: 14,128.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,789.87 : 28,171.46 = 9,423.13 : x
  2. Step 2: Convert to fraction form
    18,789.87/28,171.46 = 9,423.13/x
  3. Step 3: Cross multiply
    18,789.87x = 28,171.46 × 9,423.13
  4. Step 4: Simplify right side
    18,789.87x = 265,463,282.75
  5. Step 5: Solve for x
    x = 265,463,282.75/18,789.87
  6. Step 6: Final answer
    x = 14,128.00

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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.