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Finding the Fourth Proportional to 15,602.22, 21,531 and 8,528.64

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Solution

The fourth proportional to 15,602.22, 21,531 and 8,528.64 is: 11,769.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,602.22 : 21,531 = 8,528.64 : x
  2. Step 2: Convert to fraction form
    15,602.22/21,531 = 8,528.64/x
  3. Step 3: Cross multiply
    15,602.22x = 21,531 × 8,528.64
  4. Step 4: Simplify right side
    15,602.22x = 183,630,147.84
  5. Step 5: Solve for x
    x = 183,630,147.84/15,602.22
  6. Step 6: Final answer
    x = 11,769.49

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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.