Home / 13,285.72-18,334.34-7,317.80

Finding the Fourth Proportional to 13,285.72, 18,334.34 and 7,317.80

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Solution

The fourth proportional to 13,285.72, 18,334.34 and 7,317.80 is: 10,098.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.72 : 18,334.34 = 7,317.80 : x
  2. Step 2: Convert to fraction form
    13,285.72/18,334.34 = 7,317.80/x
  3. Step 3: Cross multiply
    13,285.72x = 18,334.34 × 7,317.80
  4. Step 4: Simplify right side
    13,285.72x = 134,167,033.25
  5. Step 5: Solve for x
    x = 134,167,033.25/13,285.72
  6. Step 6: Final answer
    x = 10,098.59

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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.