Home / 18,981.46-28,416.84-11,059.80

Finding the Fourth Proportional to 18,981.46, 28,416.84 and 11,059.80

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Solution

The fourth proportional to 18,981.46, 28,416.84 and 11,059.80 is: 16,557.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981.46 : 28,416.84 = 11,059.80 : x
  2. Step 2: Convert to fraction form
    18,981.46/28,416.84 = 11,059.80/x
  3. Step 3: Cross multiply
    18,981.46x = 28,416.84 × 11,059.80
  4. Step 4: Simplify right side
    18,981.46x = 314,284,567.03
  5. Step 5: Solve for x
    x = 314,284,567.03/18,981.46
  6. Step 6: Final answer
    x = 16,557.45

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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.