Home / 13,191.57-18,204.33-7,223.19

Finding the Fourth Proportional to 13,191.57, 18,204.33 and 7,223.19

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Solution

The fourth proportional to 13,191.57, 18,204.33 and 7,223.19 is: 9,967.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.57 : 18,204.33 = 7,223.19 : x
  2. Step 2: Convert to fraction form
    13,191.57/18,204.33 = 7,223.19/x
  3. Step 3: Cross multiply
    13,191.57x = 18,204.33 × 7,223.19
  4. Step 4: Simplify right side
    13,191.57x = 131,493,334.41
  5. Step 5: Solve for x
    x = 131,493,334.41/13,191.57
  6. Step 6: Final answer
    x = 9,967.98

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Half scale
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Double scale
Find fourth proportional to 13,192.57, 18,205.71 and 7,224.19
Similar ratio
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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.