Home / 10,690.40-16,031.28-4,116.80

Finding the Fourth Proportional to 10,690.40, 16,031.28 and 4,116.80

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Solution

The fourth proportional to 10,690.40, 16,031.28 and 4,116.80 is: 6,173.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,690.40 : 16,031.28 = 4,116.80 : x
  2. Step 2: Convert to fraction form
    10,690.40/16,031.28 = 4,116.80/x
  3. Step 3: Cross multiply
    10,690.40x = 16,031.28 × 4,116.80
  4. Step 4: Simplify right side
    10,690.40x = 65,997,573.50
  5. Step 5: Solve for x
    x = 65,997,573.50/10,690.40
  6. Step 6: Final answer
    x = 6,173.54

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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.