Home / 13,915.08-20,855.34-6,509.88

Finding the Fourth Proportional to 13,915.08, 20,855.34 and 6,509.88

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Solution

The fourth proportional to 13,915.08, 20,855.34 and 6,509.88 is: 9,756.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.08 : 20,855.34 = 6,509.88 : x
  2. Step 2: Convert to fraction form
    13,915.08/20,855.34 = 6,509.88/x
  3. Step 3: Cross multiply
    13,915.08x = 20,855.34 × 6,509.88
  4. Step 4: Simplify right side
    13,915.08x = 135,765,760.76
  5. Step 5: Solve for x
    x = 135,765,760.76/13,915.08
  6. Step 6: Final answer
    x = 9,756.74

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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.