Home / 13,462.89-20,180.16-6,438.57

Finding the Fourth Proportional to 13,462.89, 20,180.16 and 6,438.57

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Solution

The fourth proportional to 13,462.89, 20,180.16 and 6,438.57 is: 9,651.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,462.89 : 20,180.16 = 6,438.57 : x
  2. Step 2: Convert to fraction form
    13,462.89/20,180.16 = 6,438.57/x
  3. Step 3: Cross multiply
    13,462.89x = 20,180.16 × 6,438.57
  4. Step 4: Simplify right side
    13,462.89x = 129,931,372.77
  5. Step 5: Solve for x
    x = 129,931,372.77/13,462.89
  6. Step 6: Final answer
    x = 9,651.08

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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.