Home / 12,145.28-16,760.64-6,840.08

Finding the Fourth Proportional to 12,145.28, 16,760.64 and 6,840.08

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Solution

The fourth proportional to 12,145.28, 16,760.64 and 6,840.08 is: 9,439.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.28 : 16,760.64 = 6,840.08 : x
  2. Step 2: Convert to fraction form
    12,145.28/16,760.64 = 6,840.08/x
  3. Step 3: Cross multiply
    12,145.28x = 16,760.64 × 6,840.08
  4. Step 4: Simplify right side
    12,145.28x = 114,644,118.45
  5. Step 5: Solve for x
    x = 114,644,118.45/12,145.28
  6. Step 6: Final answer
    x = 9,439.40

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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.