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Finding the Fourth Proportional to 12,656.00, 17,464.93 and 6,990.64

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Solution

The fourth proportional to 12,656.00, 17,464.93 and 6,990.64 is: 9,646.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,656.00 : 17,464.93 = 6,990.64 : x
  2. Step 2: Convert to fraction form
    12,656.00/17,464.93 = 6,990.64/x
  3. Step 3: Cross multiply
    12,656.00x = 17,464.93 × 6,990.64
  4. Step 4: Simplify right side
    12,656.00x = 122,090,977.12
  5. Step 5: Solve for x
    x = 122,090,977.12/12,656.00
  6. Step 6: Final answer
    x = 9,646.88

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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.