Home / 12,954.40-19,426.80-4,189.60

Finding the Fourth Proportional to 12,954.40, 19,426.80 and 4,189.60

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Solution

The fourth proportional to 12,954.40, 19,426.80 and 4,189.60 is: 6,282.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,954.40 : 19,426.80 = 4,189.60 : x
  2. Step 2: Convert to fraction form
    12,954.40/19,426.80 = 4,189.60/x
  3. Step 3: Cross multiply
    12,954.40x = 19,426.80 × 4,189.60
  4. Step 4: Simplify right side
    12,954.40x = 81,390,521.28
  5. Step 5: Solve for x
    x = 81,390,521.28/12,954.40
  6. Step 6: Final answer
    x = 6,282.85

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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.