Home / 12,309.17-16,986.06-6,931.64

Finding the Fourth Proportional to 12,309.17, 16,986.06 and 6,931.64

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Solution

The fourth proportional to 12,309.17, 16,986.06 and 6,931.64 is: 9,565.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,309.17 : 16,986.06 = 6,931.64 : x
  2. Step 2: Convert to fraction form
    12,309.17/16,986.06 = 6,931.64/x
  3. Step 3: Cross multiply
    12,309.17x = 16,986.06 × 6,931.64
  4. Step 4: Simplify right side
    12,309.17x = 117,741,168.01
  5. Step 5: Solve for x
    x = 117,741,168.01/12,309.17
  6. Step 6: Final answer
    x = 9,565.33

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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.