Home / 13,942.80-19,240.20-12,828.24

Finding the Fourth Proportional to 13,942.80, 19,240.20 and 12,828.24

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Solution

The fourth proportional to 13,942.80, 19,240.20 and 12,828.24 is: 17,702.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,942.80 : 19,240.20 = 12,828.24 : x
  2. Step 2: Convert to fraction form
    13,942.80/19,240.20 = 12,828.24/x
  3. Step 3: Cross multiply
    13,942.80x = 19,240.20 × 12,828.24
  4. Step 4: Simplify right side
    13,942.80x = 246,817,903.25
  5. Step 5: Solve for x
    x = 246,817,903.25/13,942.80
  6. Step 6: Final answer
    x = 17,702.18

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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.