Home / 13,134.65-18,122.60-8,425.31

Finding the Fourth Proportional to 13,134.65, 18,122.60 and 8,425.31

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Solution

The fourth proportional to 13,134.65, 18,122.60 and 8,425.31 is: 11,624.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.65 : 18,122.60 = 8,425.31 : x
  2. Step 2: Convert to fraction form
    13,134.65/18,122.60 = 8,425.31/x
  3. Step 3: Cross multiply
    13,134.65x = 18,122.60 × 8,425.31
  4. Step 4: Simplify right side
    13,134.65x = 152,688,390.27
  5. Step 5: Solve for x
    x = 152,688,390.27/13,134.65
  6. Step 6: Final answer
    x = 11,624.86

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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.