Home / 11,210.80-16,816.20-7,711.60

Finding the Fourth Proportional to 11,210.80, 16,816.20 and 7,711.60

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Solution

The fourth proportional to 11,210.80, 16,816.20 and 7,711.60 is: 11,567.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,210.80 : 16,816.20 = 7,711.60 : x
  2. Step 2: Convert to fraction form
    11,210.80/16,816.20 = 7,711.60/x
  3. Step 3: Cross multiply
    11,210.80x = 16,816.20 × 7,711.60
  4. Step 4: Simplify right side
    11,210.80x = 129,679,807.92
  5. Step 5: Solve for x
    x = 129,679,807.92/11,210.80
  6. Step 6: Final answer
    x = 11,567.40

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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.