Home / 28,855.28-39,819.48-16,281.20

Finding the Fourth Proportional to 28,855.28, 39,819.48 and 16,281.20

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Solution

The fourth proportional to 28,855.28, 39,819.48 and 16,281.20 is: 22,467.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,855.28 : 39,819.48 = 16,281.20 : x
  2. Step 2: Convert to fraction form
    28,855.28/39,819.48 = 16,281.20/x
  3. Step 3: Cross multiply
    28,855.28x = 39,819.48 × 16,281.20
  4. Step 4: Simplify right side
    28,855.28x = 648,308,917.78
  5. Step 5: Solve for x
    x = 648,308,917.78/28,855.28
  6. Step 6: Final answer
    x = 22,467.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.