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Finding the Fourth Proportional to 12,366.81, 17,066.15 and 6,777.81

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Solution

The fourth proportional to 12,366.81, 17,066.15 and 6,777.81 is: 9,353.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,366.81 : 17,066.15 = 6,777.81 : x
  2. Step 2: Convert to fraction form
    12,366.81/17,066.15 = 6,777.81/x
  3. Step 3: Cross multiply
    12,366.81x = 17,066.15 × 6,777.81
  4. Step 4: Simplify right side
    12,366.81x = 115,671,088.24
  5. Step 5: Solve for x
    x = 115,671,088.24/12,366.81
  6. Step 6: Final answer
    x = 9,353.35

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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.