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Finding the Fourth Proportional to 15,566.60, 21,481.07 and 8,851.30

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Solution

The fourth proportional to 15,566.60, 21,481.07 and 8,851.30 is: 12,214.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,566.60 : 21,481.07 = 8,851.30 : x
  2. Step 2: Convert to fraction form
    15,566.60/21,481.07 = 8,851.30/x
  3. Step 3: Cross multiply
    15,566.60x = 21,481.07 × 8,851.30
  4. Step 4: Simplify right side
    15,566.60x = 190,135,394.89
  5. Step 5: Solve for x
    x = 190,135,394.89/15,566.60
  6. Step 6: Final answer
    x = 12,214.32

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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.