Home / 13,019.40-19,529.10-11,512.80

Finding the Fourth Proportional to 13,019.40, 19,529.10 and 11,512.80

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Solution

The fourth proportional to 13,019.40, 19,529.10 and 11,512.80 is: 17,269.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,019.40 : 19,529.10 = 11,512.80 : x
  2. Step 2: Convert to fraction form
    13,019.40/19,529.10 = 11,512.80/x
  3. Step 3: Cross multiply
    13,019.40x = 19,529.10 × 11,512.80
  4. Step 4: Simplify right side
    13,019.40x = 224,834,622.48
  5. Step 5: Solve for x
    x = 224,834,622.48/13,019.40
  6. Step 6: Final answer
    x = 17,269.20

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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.