Home / 13,609.23-20,421.75-5,294.99

Finding the Fourth Proportional to 13,609.23, 20,421.75 and 5,294.99

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Solution

The fourth proportional to 13,609.23, 20,421.75 and 5,294.99 is: 7,945.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,609.23 : 20,421.75 = 5,294.99 : x
  2. Step 2: Convert to fraction form
    13,609.23/20,421.75 = 5,294.99/x
  3. Step 3: Cross multiply
    13,609.23x = 20,421.75 × 5,294.99
  4. Step 4: Simplify right side
    13,609.23x = 108,132,859.92
  5. Step 5: Solve for x
    x = 108,132,859.92/13,609.23
  6. Step 6: Final answer
    x = 7,945.55

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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.