Home / 10,686.40-16,025.28-4,112.80

Finding the Fourth Proportional to 10,686.40, 16,025.28 and 4,112.80

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Solution

The fourth proportional to 10,686.40, 16,025.28 and 4,112.80 is: 6,167.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,686.40 : 16,025.28 = 4,112.80 : x
  2. Step 2: Convert to fraction form
    10,686.40/16,025.28 = 4,112.80/x
  3. Step 3: Cross multiply
    10,686.40x = 16,025.28 × 4,112.80
  4. Step 4: Simplify right side
    10,686.40x = 65,908,771.58
  5. Step 5: Solve for x
    x = 65,908,771.58/10,686.40
  6. Step 6: Final answer
    x = 6,167.54

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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.