Home / 12,459.05-18,685.40-3,691.92

Finding the Fourth Proportional to 12,459.05, 18,685.40 and 3,691.92

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Solution

The fourth proportional to 12,459.05, 18,685.40 and 3,691.92 is: 5,536.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459.05 : 18,685.40 = 3,691.92 : x
  2. Step 2: Convert to fraction form
    12,459.05/18,685.40 = 3,691.92/x
  3. Step 3: Cross multiply
    12,459.05x = 18,685.40 × 3,691.92
  4. Step 4: Simplify right side
    12,459.05x = 68,984,983.51
  5. Step 5: Solve for x
    x = 68,984,983.51/12,459.05
  6. Step 6: Final answer
    x = 5,536.94

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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.