Home / 19,656.40-29,446.20-11,438.80

Finding the Fourth Proportional to 19,656.40, 29,446.20 and 11,438.80

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Solution

The fourth proportional to 19,656.40, 29,446.20 and 11,438.80 is: 17,135.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,656.40 : 29,446.20 = 11,438.80 : x
  2. Step 2: Convert to fraction form
    19,656.40/29,446.20 = 11,438.80/x
  3. Step 3: Cross multiply
    19,656.40x = 29,446.20 × 11,438.80
  4. Step 4: Simplify right side
    19,656.40x = 336,829,192.56
  5. Step 5: Solve for x
    x = 336,829,192.56/19,656.40
  6. Step 6: Final answer
    x = 17,135.85

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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.