Home / 10,638.72-14,679.41-6,861.15

Finding the Fourth Proportional to 10,638.72, 14,679.41 and 6,861.15

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Solution

The fourth proportional to 10,638.72, 14,679.41 and 6,861.15 is: 9,467.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,638.72 : 14,679.41 = 6,861.15 : x
  2. Step 2: Convert to fraction form
    10,638.72/14,679.41 = 6,861.15/x
  3. Step 3: Cross multiply
    10,638.72x = 14,679.41 × 6,861.15
  4. Step 4: Simplify right side
    10,638.72x = 100,717,599.62
  5. Step 5: Solve for x
    x = 100,717,599.62/10,638.72
  6. Step 6: Final answer
    x = 9,467.08

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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.