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Finding the Fourth Proportional to 28,563.60, 42,845.40 and 8,848.20

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Solution

The fourth proportional to 28,563.60, 42,845.40 and 8,848.20 is: 13,272.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,563.60 : 42,845.40 = 8,848.20 : x
  2. Step 2: Convert to fraction form
    28,563.60/42,845.40 = 8,848.20/x
  3. Step 3: Cross multiply
    28,563.60x = 42,845.40 × 8,848.20
  4. Step 4: Simplify right side
    28,563.60x = 379,104,668.28
  5. Step 5: Solve for x
    x = 379,104,668.28/28,563.60
  6. Step 6: Final answer
    x = 13,272.30

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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.