Home / 12,655.36-17,464.89-6,990.40

Finding the Fourth Proportional to 12,655.36, 17,464.89 and 6,990.40

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Solution

The fourth proportional to 12,655.36, 17,464.89 and 6,990.40 is: 9,647.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.36 : 17,464.89 = 6,990.40 : x
  2. Step 2: Convert to fraction form
    12,655.36/17,464.89 = 6,990.40/x
  3. Step 3: Cross multiply
    12,655.36x = 17,464.89 × 6,990.40
  4. Step 4: Simplify right side
    12,655.36x = 122,086,567.06
  5. Step 5: Solve for x
    x = 122,086,567.06/12,655.36
  6. Step 6: Final answer
    x = 9,647.02

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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.