Home / 18,911.40-28,367.10-15,570.60

Finding the Fourth Proportional to 18,911.40, 28,367.10 and 15,570.60

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Solution

The fourth proportional to 18,911.40, 28,367.10 and 15,570.60 is: 23,355.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,911.40 : 28,367.10 = 15,570.60 : x
  2. Step 2: Convert to fraction form
    18,911.40/28,367.10 = 15,570.60/x
  3. Step 3: Cross multiply
    18,911.40x = 28,367.10 × 15,570.60
  4. Step 4: Simplify right side
    18,911.40x = 441,692,767.26
  5. Step 5: Solve for x
    x = 441,692,767.26/18,911.40
  6. Step 6: Final answer
    x = 23,355.90

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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.