Home / 12,303.60-16,979-6,998.64

Finding the Fourth Proportional to 12,303.60, 16,979 and 6,998.64

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Solution

The fourth proportional to 12,303.60, 16,979 and 6,998.64 is: 9,658.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,303.60 : 16,979 = 6,998.64 : x
  2. Step 2: Convert to fraction form
    12,303.60/16,979 = 6,998.64/x
  3. Step 3: Cross multiply
    12,303.60x = 16,979 × 6,998.64
  4. Step 4: Simplify right side
    12,303.60x = 118,829,908.56
  5. Step 5: Solve for x
    x = 118,829,908.56/12,303.60
  6. Step 6: Final answer
    x = 9,658.14

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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.