Home / 19,564.40-29,404.20-19,218.80

Finding the Fourth Proportional to 19,564.40, 29,404.20 and 19,218.80

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Solution

The fourth proportional to 19,564.40, 29,404.20 and 19,218.80 is: 28,884.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,564.40 : 29,404.20 = 19,218.80 : x
  2. Step 2: Convert to fraction form
    19,564.40/29,404.20 = 19,218.80/x
  3. Step 3: Cross multiply
    19,564.40x = 29,404.20 × 19,218.80
  4. Step 4: Simplify right side
    19,564.40x = 565,113,438.96
  5. Step 5: Solve for x
    x = 565,113,438.96/19,564.40
  6. Step 6: Final answer
    x = 28,884.78

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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.