Home / 20,404.79-30,607.32-5,615.27

Finding the Fourth Proportional to 20,404.79, 30,607.32 and 5,615.27

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Solution

The fourth proportional to 20,404.79, 30,607.32 and 5,615.27 is: 8,422.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.79 : 30,607.32 = 5,615.27 : x
  2. Step 2: Convert to fraction form
    20,404.79/30,607.32 = 5,615.27/x
  3. Step 3: Cross multiply
    20,404.79x = 30,607.32 × 5,615.27
  4. Step 4: Simplify right side
    20,404.79x = 171,868,365.78
  5. Step 5: Solve for x
    x = 171,868,365.78/20,404.79
  6. Step 6: Final answer
    x = 8,422.94

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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.