Home / 11,211.20-16,816.80-11,065.40

Finding the Fourth Proportional to 11,211.20, 16,816.80 and 11,065.40

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Solution

The fourth proportional to 11,211.20, 16,816.80 and 11,065.40 is: 16,598.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.20 : 16,816.80 = 11,065.40 : x
  2. Step 2: Convert to fraction form
    11,211.20/16,816.80 = 11,065.40/x
  3. Step 3: Cross multiply
    11,211.20x = 16,816.80 × 11,065.40
  4. Step 4: Simplify right side
    11,211.20x = 186,084,618.72
  5. Step 5: Solve for x
    x = 186,084,618.72/11,211.20
  6. Step 6: Final answer
    x = 16,598.10

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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.