Home / 20,429.23-30,615.49-9,308.74

Finding the Fourth Proportional to 20,429.23, 30,615.49 and 9,308.74

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Solution

The fourth proportional to 20,429.23, 30,615.49 and 9,308.74 is: 13,950.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.23 : 30,615.49 = 9,308.74 : x
  2. Step 2: Convert to fraction form
    20,429.23/30,615.49 = 9,308.74/x
  3. Step 3: Cross multiply
    20,429.23x = 30,615.49 × 9,308.74
  4. Step 4: Simplify right side
    20,429.23x = 284,991,636.38
  5. Step 5: Solve for x
    x = 284,991,636.38/20,429.23
  6. Step 6: Final answer
    x = 13,950.19

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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.