Home / 20,567.30-28,381.23-11,615.67

Finding the Fourth Proportional to 20,567.30, 28,381.23 and 11,615.67

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Solution

The fourth proportional to 20,567.30, 28,381.23 and 11,615.67 is: 16,028.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,567.30 : 28,381.23 = 11,615.67 : x
  2. Step 2: Convert to fraction form
    20,567.30/28,381.23 = 11,615.67/x
  3. Step 3: Cross multiply
    20,567.30x = 28,381.23 × 11,615.67
  4. Step 4: Simplify right side
    20,567.30x = 329,667,001.87
  5. Step 5: Solve for x
    x = 329,667,001.87/20,567.30
  6. Step 6: Final answer
    x = 16,028.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.