Home / 18,867.60-28,285.20-16,899.30

Finding the Fourth Proportional to 18,867.60, 28,285.20 and 16,899.30

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Solution

The fourth proportional to 18,867.60, 28,285.20 and 16,899.30 is: 25,334.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867.60 : 28,285.20 = 16,899.30 : x
  2. Step 2: Convert to fraction form
    18,867.60/28,285.20 = 16,899.30/x
  3. Step 3: Cross multiply
    18,867.60x = 28,285.20 × 16,899.30
  4. Step 4: Simplify right side
    18,867.60x = 478,000,080.36
  5. Step 5: Solve for x
    x = 478,000,080.36/18,867.60
  6. Step 6: Final answer
    x = 25,334.44

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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.