Home / 20,404.40-30,554.76-11,159.60

Finding the Fourth Proportional to 20,404.40, 30,554.76 and 11,159.60

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Solution

The fourth proportional to 20,404.40, 30,554.76 and 11,159.60 is: 16,711.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.40 : 30,554.76 = 11,159.60 : x
  2. Step 2: Convert to fraction form
    20,404.40/30,554.76 = 11,159.60/x
  3. Step 3: Cross multiply
    20,404.40x = 30,554.76 × 11,159.60
  4. Step 4: Simplify right side
    20,404.40x = 340,978,899.70
  5. Step 5: Solve for x
    x = 340,978,899.70/20,404.40
  6. Step 6: Final answer
    x = 16,711.05

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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.