Home / 12,627.45-17,420.04-8,152.65

Finding the Fourth Proportional to 12,627.45, 17,420.04 and 8,152.65

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Solution

The fourth proportional to 12,627.45, 17,420.04 and 8,152.65 is: 11,246.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,627.45 : 17,420.04 = 8,152.65 : x
  2. Step 2: Convert to fraction form
    12,627.45/17,420.04 = 8,152.65/x
  3. Step 3: Cross multiply
    12,627.45x = 17,420.04 × 8,152.65
  4. Step 4: Simplify right side
    12,627.45x = 142,019,489.11
  5. Step 5: Solve for x
    x = 142,019,489.11/12,627.45
  6. Step 6: Final answer
    x = 11,246.89

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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.