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Finding the Fourth Proportional to 12,813.58, 17,656.50 and 9,451.07

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Solution

The fourth proportional to 12,813.58, 17,656.50 and 9,451.07 is: 13,023.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,813.58 : 17,656.50 = 9,451.07 : x
  2. Step 2: Convert to fraction form
    12,813.58/17,656.50 = 9,451.07/x
  3. Step 3: Cross multiply
    12,813.58x = 17,656.50 × 9,451.07
  4. Step 4: Simplify right side
    12,813.58x = 166,872,777.66
  5. Step 5: Solve for x
    x = 166,872,777.66/12,813.58
  6. Step 6: Final answer
    x = 13,023.12

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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.