Home / 18,711.40-28,056.30-7,025.80

Finding the Fourth Proportional to 18,711.40, 28,056.30 and 7,025.80

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Solution

The fourth proportional to 18,711.40, 28,056.30 and 7,025.80 is: 10,534.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711.40 : 28,056.30 = 7,025.80 : x
  2. Step 2: Convert to fraction form
    18,711.40/28,056.30 = 7,025.80/x
  3. Step 3: Cross multiply
    18,711.40x = 28,056.30 × 7,025.80
  4. Step 4: Simplify right side
    18,711.40x = 197,117,952.54
  5. Step 5: Solve for x
    x = 197,117,952.54/18,711.40
  6. Step 6: Final answer
    x = 10,534.64

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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.