Home / 13,247.86-18,287.25-7,941.65

Finding the Fourth Proportional to 13,247.86, 18,287.25 and 7,941.65

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Solution

The fourth proportional to 13,247.86, 18,287.25 and 7,941.65 is: 10,962.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,247.86 : 18,287.25 = 7,941.65 : x
  2. Step 2: Convert to fraction form
    13,247.86/18,287.25 = 7,941.65/x
  3. Step 3: Cross multiply
    13,247.86x = 18,287.25 × 7,941.65
  4. Step 4: Simplify right side
    13,247.86x = 145,230,847.53
  5. Step 5: Solve for x
    x = 145,230,847.53/13,247.86
  6. Step 6: Final answer
    x = 10,962.59

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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.