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Finding the Fourth Proportional to 12,635.63, 18,914.01 and 9,307.64

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Solution

The fourth proportional to 12,635.63, 18,914.01 and 9,307.64 is: 13,932.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,635.63 : 18,914.01 = 9,307.64 : x
  2. Step 2: Convert to fraction form
    12,635.63/18,914.01 = 9,307.64/x
  3. Step 3: Cross multiply
    12,635.63x = 18,914.01 × 9,307.64
  4. Step 4: Simplify right side
    12,635.63x = 176,044,701.47
  5. Step 5: Solve for x
    x = 176,044,701.47/12,635.63
  6. Step 6: Final answer
    x = 13,932.40

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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.