Home / 11,142.60-16,718.40-4,903.80

Finding the Fourth Proportional to 11,142.60, 16,718.40 and 4,903.80

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Solution

The fourth proportional to 11,142.60, 16,718.40 and 4,903.80 is: 7,357.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,142.60 : 16,718.40 = 4,903.80 : x
  2. Step 2: Convert to fraction form
    11,142.60/16,718.40 = 4,903.80/x
  3. Step 3: Cross multiply
    11,142.60x = 16,718.40 × 4,903.80
  4. Step 4: Simplify right side
    11,142.60x = 81,983,689.92
  5. Step 5: Solve for x
    x = 81,983,689.92/11,142.60
  6. Step 6: Final answer
    x = 7,357.68

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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.