Home / 12,218.65-18,327.63-3,899.17

Finding the Fourth Proportional to 12,218.65, 18,327.63 and 3,899.17

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Solution

The fourth proportional to 12,218.65, 18,327.63 and 3,899.17 is: 5,848.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.65 : 18,327.63 = 3,899.17 : x
  2. Step 2: Convert to fraction form
    12,218.65/18,327.63 = 3,899.17/x
  3. Step 3: Cross multiply
    12,218.65x = 18,327.63 × 3,899.17
  4. Step 4: Simplify right side
    12,218.65x = 71,462,545.07
  5. Step 5: Solve for x
    x = 71,462,545.07/12,218.65
  6. Step 6: Final answer
    x = 5,848.64

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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.