Home / 13,008.40-19,512.60-5,222.80

Finding the Fourth Proportional to 13,008.40, 19,512.60 and 5,222.80

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Solution

The fourth proportional to 13,008.40, 19,512.60 and 5,222.80 is: 7,834.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,008.40 : 19,512.60 = 5,222.80 : x
  2. Step 2: Convert to fraction form
    13,008.40/19,512.60 = 5,222.80/x
  3. Step 3: Cross multiply
    13,008.40x = 19,512.60 × 5,222.80
  4. Step 4: Simplify right side
    13,008.40x = 101,910,407.28
  5. Step 5: Solve for x
    x = 101,910,407.28/13,008.40
  6. Step 6: Final answer
    x = 7,834.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.