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Finding the Fourth Proportional to 12,660.30, 18,984.98 and 9,740.66

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Solution

The fourth proportional to 12,660.30, 18,984.98 and 9,740.66 is: 14,606.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,660.30 : 18,984.98 = 9,740.66 : x
  2. Step 2: Convert to fraction form
    12,660.30/18,984.98 = 9,740.66/x
  3. Step 3: Cross multiply
    12,660.30x = 18,984.98 × 9,740.66
  4. Step 4: Simplify right side
    12,660.30x = 184,926,164.71
  5. Step 5: Solve for x
    x = 184,926,164.71/12,660.30
  6. Step 6: Final answer
    x = 14,606.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.