Home / 14,661.28-20,231.04-8,287.50

Finding the Fourth Proportional to 14,661.28, 20,231.04 and 8,287.50

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Solution

The fourth proportional to 14,661.28, 20,231.04 and 8,287.50 is: 11,435.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,661.28 : 20,231.04 = 8,287.50 : x
  2. Step 2: Convert to fraction form
    14,661.28/20,231.04 = 8,287.50/x
  3. Step 3: Cross multiply
    14,661.28x = 20,231.04 × 8,287.50
  4. Step 4: Simplify right side
    14,661.28x = 167,664,744
  5. Step 5: Solve for x
    x = 167,664,744/14,661.28
  6. Step 6: Final answer
    x = 11,435.89

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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.