Home / 13,209.48-18,245.05-9,618.70

Finding the Fourth Proportional to 13,209.48, 18,245.05 and 9,618.70

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Solution

The fourth proportional to 13,209.48, 18,245.05 and 9,618.70 is: 13,285.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209.48 : 18,245.05 = 9,618.70 : x
  2. Step 2: Convert to fraction form
    13,209.48/18,245.05 = 9,618.70/x
  3. Step 3: Cross multiply
    13,209.48x = 18,245.05 × 9,618.70
  4. Step 4: Simplify right side
    13,209.48x = 175,493,626.99
  5. Step 5: Solve for x
    x = 175,493,626.99/13,209.48
  6. Step 6: Final answer
    x = 13,285.43

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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.