Home / 20,429.36-30,615.68-9,308.87

Finding the Fourth Proportional to 20,429.36, 30,615.68 and 9,308.87

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Solution

The fourth proportional to 20,429.36, 30,615.68 and 9,308.87 is: 13,950.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.36 : 30,615.68 = 9,308.87 : x
  2. Step 2: Convert to fraction form
    20,429.36/30,615.68 = 9,308.87/x
  3. Step 3: Cross multiply
    20,429.36x = 30,615.68 × 9,308.87
  4. Step 4: Simplify right side
    20,429.36x = 284,997,255.28
  5. Step 5: Solve for x
    x = 284,997,255.28/20,429.36
  6. Step 6: Final answer
    x = 13,950.38

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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.